<SEC-DOCUMENT>0001193125-25-172653.txt : 20250804
<SEC-HEADER>0001193125-25-172653.hdr.sgml : 20250804
<ACCEPTANCE-DATETIME>20250804163130
ACCESSION NUMBER:		0001193125-25-172653
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20250801
ITEM INFORMATION:		Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20250804
DATE AS OF CHANGE:		20250804

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CATALYST PHARMACEUTICALS, INC.
		CENTRAL INDEX KEY:			0001369568
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		EIN:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33057
		FILM NUMBER:		251180826

	BUSINESS ADDRESS:	
		STREET 1:		355 ALHAMBRA CIRCLE
		STREET 2:		SUITE 801
		CITY:			CORAL GABLES
		STATE:			FL
		ZIP:			33134
		BUSINESS PHONE:		(305) 529-2522

	MAIL ADDRESS:	
		STREET 1:		355 ALHAMBRA CIRCLE
		STREET 2:		SUITE 801
		CITY:			CORAL GABLES
		STATE:			FL
		ZIP:			33134

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CATALYST PHARMACEUTICAL PARTNERS, INC.
		DATE OF NAME CHANGE:	20110215

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Catalyst Pharmaceutical Partners, Inc.
		DATE OF NAME CHANGE:	20060719
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>d17349d8k.htm
<DESCRIPTION>8-K
<TEXT>
<XBRL>
<?xml version='1.0' encoding='ASCII'?>
<html xmlns:dei="http://xbrl.sec.gov/dei/2024" xmlns:us-types="http://fasb.org/us-types/2024" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:cprx="http://www.catalystpharma.com/20250801" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:utr="http://www.xbrl.org/2009/utr" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:ix="http://www.xbrl.org/2013/inlineXBRL" xmlns:ixt="http://www.xbrl.org/inlineXBRL/transformation/2015-02-26" xmlns:ixt-sec="http://www.sec.gov/inlineXBRL/transformation/2015-08-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>8-K</title>
<meta http-equiv="Content-Type" content="text/html"/>
</head>
   <body><div style="display:none"> <ix:header> <ix:hidden> <ix:nonNumeric id="Hidden_dei_SecurityExchangeName" name="dei:SecurityExchangeName" contextRef="duration_2025-08-01_to_2025-08-01">NASDAQ</ix:nonNumeric> <ix:nonNumeric name="dei:AmendmentFlag" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-263">false</ix:nonNumeric> <ix:nonNumeric id="Hidden_dei_EntityCentralIndexKey" name="dei:EntityCentralIndexKey" contextRef="duration_2025-08-01_to_2025-08-01">0001369568</ix:nonNumeric> </ix:hidden> <ix:references> <link:schemaRef xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xlink:type="simple" xlink:href="cprx-20250801.xsd" xlink:arcrole="http://www.xbrl.org/2003/linkbase"/> </ix:references> <ix:resources> <xbrli:context id="duration_2025-08-01_to_2025-08-01"> <xbrli:entity> <xbrli:identifier scheme="http://www.sec.gov/CIK">0001369568</xbrli:identifier> </xbrli:entity> <xbrli:period> <xbrli:startDate>2025-08-01</xbrli:startDate> <xbrli:endDate>2025-08-01</xbrli:endDate> </xbrli:period> </xbrli:context> </ix:resources> </ix:header> </div> <div style="text-align:center"> <div style="width:8.5in;text-align:left;margin-left: auto;margin-right: auto"> <div style="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&#160;</div> <div style="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&#160;</div> <p style="margin-top:4pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman;font-weight:bold;text-align:center">UNITED STATES</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman;font-weight:bold;text-align:center">SECURITIES AND EXCHANGE COMMISSION</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">Washington, D.C. 20549</p> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <div style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</div></div> <p style="margin-top:6pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman;font-weight:bold;text-align:center">FORM <span style="white-space:nowrap"><ix:nonNumeric name="dei:DocumentType" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-274">8-K</ix:nonNumeric></span></p> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <div style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</div></div> <p style="margin-top:6pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">CURRENT REPORT</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">PURSUANT TO SECTION 13 OR 15(d)</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">OF THE SECURITIES EXCHANGE ACT OF 1934</p> <p style="margin-top:6pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">Date of Report (Date of Earliest Event Reported): <ix:nonNumeric name="dei:DocumentPeriodEndDate" contextRef="duration_2025-08-01_to_2025-08-01" format="ixt:datemonthdayyearen" id="ixv-275">August&#160;1, 2025</ix:nonNumeric></p> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <div style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</div></div> <p style="margin-top:6pt; margin-bottom:0pt; font-size:24pt; font-family:Times New Roman;font-weight:bold;text-align:center"><ix:nonNumeric name="dei:EntityRegistrantName" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-276">CATALYST PHARMACEUTICALS, INC.</ix:nonNumeric></p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">(Exact Name Of Registrant As Specified In Its Charter)</p> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <div style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</div></div> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;width:100%;border-spacing:0;margin:0 auto">
<tr>
<td style="width:34%"/>
<td style="vertical-align:bottom"/>
<td style="width:32%"/>
<td style="vertical-align:bottom;width:1%"/>
<td style="width:32%"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:top;text-align:center"><span style="font-weight:bold"><ix:nonNumeric name="dei:EntityIncorporationStateCountryCode" contextRef="duration_2025-08-01_to_2025-08-01" format="ixt-sec:stateprovnameen" id="ixv-277">Delaware</ix:nonNumeric></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:top;text-align:center"><span style="font-weight:bold"><span style="white-space:nowrap"><ix:nonNumeric name="dei:EntityFileNumber" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-278">001-33057</ix:nonNumeric></span></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:top;text-align:center"><span style="font-weight:bold"><span style="white-space:nowrap"><ix:nonNumeric name="dei:EntityTaxIdentificationNumber" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-279">76-0837053</ix:nonNumeric></span></span></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style="vertical-align:top;text-align:center"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">(State or other jurisdiction</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">of incorporation)</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:top;text-align:center"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">(Commission</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">File Number)</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:top;text-align:center"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">(I.R.S. Employer</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Identification No.)</p></td></tr>
<tr style="font-size:1pt">
<td style="height:7.5pt" colspan="3"/>
<td style="height:7.5pt" colspan="2"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom;text-align:center" colspan="3"><span style="font-weight:bold"><ix:nonNumeric name="dei:EntityAddressAddressLine1" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-280">355 Alhambra Circle</ix:nonNumeric></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom;text-align:center" colspan="3"><span style="font-weight:bold"><ix:nonNumeric name="dei:EntityAddressAddressLine2" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-281">Suite 801</ix:nonNumeric></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom;text-align:center" colspan="3"><span style="font-weight:bold"><ix:nonNumeric name="dei:EntityAddressCityOrTown" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-282">Coral Gables</ix:nonNumeric>, <ix:nonNumeric name="dei:EntityAddressStateOrProvince" contextRef="duration_2025-08-01_to_2025-08-01" format="ixt-sec:stateprovnameen" id="ixv-283">Florida</ix:nonNumeric></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom;white-space:nowrap;text-align:center"><span style="font-weight:bold"><ix:nonNumeric name="dei:EntityAddressPostalZipCode" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-284">33134</ix:nonNumeric></span></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style="vertical-align:top;text-align:center" colspan="3"><span style="font-weight:bold">(Address of principal executive offices)</span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:top;text-align:center"><span style="font-weight:bold">(Zip Code)</span></td></tr></table> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">Registrant&#8217;s telephone number, including area code: <ix:nonNumeric name="dei:CityAreaCode" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-285">(305)</ix:nonNumeric> <span style="white-space:nowrap"><ix:nonNumeric name="dei:LocalPhoneNumber" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-286">420-3200</ix:nonNumeric></span></p> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">Not Applicable</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Former Name or Former address, if changed since last report</p> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <div style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</div></div> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Check the appropriate box below if the Form <span style="white-space:nowrap">8-K</span> filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</p> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border-spacing:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top;text-align:left"><ix:nonNumeric name="dei:WrittenCommunications" contextRef="duration_2025-08-01_to_2025-08-01" format="ixt-sec:boolballotbox" id="ixv-287">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top;text-align:left"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border-spacing:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top;text-align:left"><ix:nonNumeric name="dei:SolicitingMaterial" contextRef="duration_2025-08-01_to_2025-08-01" format="ixt-sec:boolballotbox" id="ixv-288">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top;text-align:left"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left">Soliciting material pursuant to Rule <span style="white-space:nowrap">14a-12</span> under the Exchange Act (17 CFR <span style="white-space:nowrap">240.14a-12)</span></p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border-spacing:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top;text-align:left"><ix:nonNumeric name="dei:PreCommencementTenderOffer" contextRef="duration_2025-08-01_to_2025-08-01" format="ixt-sec:boolballotbox" id="ixv-289">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top;text-align:left"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left"><span style="white-space:nowrap">Pre-commencement</span> communications pursuant to Rule <span style="white-space:nowrap">14d-2(b)</span> under the Exchange Act (17 <span style="white-space:nowrap">CFR240.14d-2(b))</span></p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border-spacing:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top;text-align:left"><ix:nonNumeric name="dei:PreCommencementIssuerTenderOffer" contextRef="duration_2025-08-01_to_2025-08-01" format="ixt-sec:boolballotbox" id="ixv-290">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top;text-align:left"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left"><span style="white-space:nowrap">Pre-commencement</span> communications pursuant to Rule <span style="white-space:nowrap">13e-4(c)</span> under the Exchange Act (17 CFR <span style="white-space:nowrap">240.13e-4(c))</span></p></td></tr></table> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Securities registered pursuant to Section&#160;12(b) of the Act:</p> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="border-collapse:collapse; font-family:Times New Roman; font-size:8pt;width:100%;border-spacing:0;margin:0 auto">
<tr>
<td style="width:34%"/>
<td style="vertical-align:bottom"/>
<td style="width:32%"/>
<td style="vertical-align:bottom;width:1%"/>
<td style="width:32%"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style="border-bottom:1.00pt solid #000000;vertical-align:bottom;white-space:nowrap;text-align:center"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Title of Each Class</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="border-bottom:1.00pt solid #000000;vertical-align:bottom;text-align:center"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Name of Exchange</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">on Which Registered</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="border-bottom:1.00pt solid #000000;vertical-align:bottom;text-align:center"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Ticker</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Symbol</p></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:top;text-align:center"><ix:nonNumeric name="dei:Security12bTitle" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-291">Common Stock, par value $0.001 per share</ix:nonNumeric></td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:top;text-align:center"> <span style=" -sec-ix-hidden:Hidden_dei_SecurityExchangeName">NASDAQ Capital Market</span> </td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:top;text-align:center"><ix:nonNumeric name="dei:TradingSymbol" contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-292">CPRX</ix:nonNumeric></td></tr></table> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167;230.405 of this Chapter) or Rule <span style="white-space:nowrap">12b-2</span> of the Securities Exchange Act of 1934 <span style="white-space:nowrap">(&#167;240.12b-2</span> of this chapter).</p> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:right">Emerging Growth Company&#8194;<ix:nonNumeric name="dei:EntityEmergingGrowthCompany" contextRef="duration_2025-08-01_to_2025-08-01" format="ixt-sec:boolballotbox" id="ixv-293">&#9744;</ix:nonNumeric>&#8195;&#8195;&#8195;&#8195;&#8195;</p> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section&#160;13(a) of the Exchange Act.&#8194;&#9744;</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&#160;</div> <div style="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&#160;</div></div></div>

<p style="margin-top:1em; margin-bottom:0em; page-break-before:always"> </p>
<hr style="color:#999999;height:3px;width:100%;clear:both"/>

<div style="text-align:center"><div style="width:8.5in;text-align:left;margin-left: auto;margin-right: auto">

<table style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;border-spacing:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:11%;vertical-align:top;text-align:left"><span style="font-weight:bold">Item&#8201;5.02</span></td>
<td style="vertical-align:top;text-align:left"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:left">Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers </p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;border-spacing:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%">&#160;</td>
<td style="width:5%;vertical-align:top;text-align:left">(d)</td>
<td style="vertical-align:top;text-align:left"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left">Election of New Directors </p></td></tr></table> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The Board of Directors (the &#8220;Board&#8221;) of Catalyst Pharmaceuticals, Inc. (the &#8220;Company&#8221;), in conformity with the Company&#8217;s bylaws, has increased the size of the Board from six members to seven members and has appointed Daniel J. Curran, M.D. to the Board. Dr.&#160;Curran, age 58, will serve until the Company&#8217;s 2026 annual meeting of stockholders or until his resignation, removal, or death, if earlier. </p> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Dr.&#160;Curran has has more than 25 years of pharmaceutical experience in strategy, business development, project leadership and development roles. Since March 2024, Dr.&#160;Curran has served as a managing partner at Mountainfield Venture Partners, LLC, a company-creation firm. Further, since January 2025, he has served as the Chief Executive Officer of Timberline Therapeutics, a clinical-stage biopharmaceutical company focused on the development and commercialization of transformational therapies for autoimmune diseases. Previously, between 2008 and 2023, Dr.&#160;Curran held roles of increasing responsibility at Takeda Pharmaceutical Company Ltd., and most recently served as a senior vice president and the head of the rare genetics and hematology therapeutic area unit from January 2019 until December 2023. Prior to joining Takeda, he served as vice president, corporate development at Millennium Pharmaceuticals, Inc, from 1999 to 2008. Prior to joining Millennium, Dr.&#160;Curran held a business development role in the product planning and acquisition group at DuPont Merck Pharmaceuticals, a pharmaceutical company. Dr.&#160;Curran previously served on the board of directors of Tome Biosciences, a private biotechnology company, and he currently serves on the Board of Directors of Xilio Therapeutics, Inc. (NASDAQ: XLO), a clinical stage biotechnology company discovering and developing tumor-activated, or masked, immuno-oncology <span style="white-space:nowrap">(I-O)</span> therapies with the goal of significantly improving outcomes for people living with cancer without the systemic side effects of current <span style="white-space:nowrap">I-O</span> treatments. Dr.&#160;Curran received an M.D. from the University of Pennsylvania School of Medicine, an M.B.A. from The Wharton School of the University of Pennsylvania, and a B.S. in chemistry from King&#8217;s College. </p> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">There is no family relationship between Dr.&#160;Curran, on the one hand, and any of the Company&#8217;s other officers or directors, on the other hand. Further, there are no understandings or arrangements between Dr.&#160;Curran, on the one hand, and any other person, on the other hand, pursuant to which Dr.&#160;Curran was selected as a director. Finally, there have been no transactions, since the beginning of the Company&#8217;s last fiscal year, or any currently proposed transactions, in which the Company was or is to be a participant and as to which the amount exceed $120,000, in which Dr.&#160;Curran had or will have a direct or indirect material interest. </p> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">On August&#160;4, 2025, the Company issued a press release announcing the appointment of Dr.&#160;Curran to the Board. The press release is attached as Exhibit 99.1 to this Current Report on Form <span style="white-space:nowrap">8-K</span> and is incorporated herein by reference. </p> <p style="font-size:18pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;border-spacing:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:11%;vertical-align:top;text-align:left"><span style="font-weight:bold">Item&#8201;9.01</span></td>
<td style="vertical-align:top;text-align:left"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:left">Financial Statements and Exhibits. </p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;border-spacing:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%">&#160;</td>
<td style="width:5%;vertical-align:top;text-align:left">(d)</td>
<td style="vertical-align:top;text-align:left"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left"><span style="text-decoration:underline">Exhibits</span> </p></td></tr></table> <p style="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:92%;border-spacing:0;margin:0 auto">


<tr>

<td/>

<td style="vertical-align:bottom;width:3%"/>
<td style="width:94%"/></tr>


<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:top;white-space:nowrap">99.1</td>
<td style="vertical-align:bottom">&#160;&#160;</td>
<td style="vertical-align:top"><a href="d17349dex991.htm">Press release issued by the Company on August&#160;4, 2025. </a></td></tr>
<tr style="font-size:1pt">
<td style="height:6pt"/>
<td style="height:6pt" colspan="2"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:top;white-space:nowrap">104</td>
<td style="vertical-align:bottom">&#160;&#160;</td>
<td style="vertical-align:top">Cover Page Interactive Data File (embedded within the Inline XBRL document)</td></tr>
</table>
 <p style="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&#160;</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:center">2 </p>

</div></div>



<p style="margin-top:1em; margin-bottom:0em; page-break-before:always"> </p>
<hr style="color:#999999;height:3px;width:100%;clear:both"/>

<div style="text-align:center"><div style="width:8.5in;text-align:left;margin-left: auto;margin-right: auto">
 <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">SIGNATURES </p> <p style="margin-top:12pt; margin-bottom:0pt; text-indent:4%; font-size:10pt; font-family:Times New Roman">Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. </p> <p style="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&#160;</p><div>
<table cellspacing="0" cellpadding="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:40%;border-spacing:0;margin-left:auto">


<tr>

<td style="width:7%"/>

<td style="vertical-align:bottom;width:1%"/>
<td style="width:92%"/></tr>


<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom" colspan="3"><span style="font-weight:bold">Catalyst Pharmaceuticals, Inc.</span></td></tr>
<tr style="font-size:1pt">
<td style="height:12pt"/>
<td style="height:12pt" colspan="2"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:top">By:</td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:1pt; border-bottom:1px solid #000000; font-size:10pt; font-family:Times New Roman;text-align:center">/s/ Michael W. Kalb</p></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom"/>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom">Michael W. Kalb</td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom"/>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom">Executive Vice President and Chief Financial Officer</td></tr>
</table></div> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Dated: August&#160;4, 2025 </p>
 <p style="margin-top:0pt;margin-bottom:0pt ; font-size:8pt">&#160;</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:center">3 </p>

</div></div>

</body></html>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>d17349dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
<HTML><HEAD>
<TITLE>EX-99.1</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE" STYLE="line-height:Normal">

<Center><DIV STYLE="width:8.5in" align="left">
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>Catalyst Pharmaceuticals Appoints Daniel Curran, MD, to its Board of Directors </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>CORAL GABLES, Fla. &#150; Aug.&nbsp;4, 2025 </B>&#150; Catalyst Pharmaceuticals, Inc. (&#147;Catalyst&#148; or &#147;Company&#148;) (Nasdaq: CPRX) today
announced the appointment of Daniel Curran, MD, to its Board of Directors. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Dr.&nbsp;Curran is a distinguished pharmaceutical executive with over 25 years
of experience spanning strategy, business development, project leadership, and development. Since March 2024, he has served as Managing Partner of Mountainfield Venture Partners, a company-creation firm. He also currently serves as Chief Executive
Officer of Timberlyne Therapeutics, a clinical-stage company focused on the development and commercialization of transformational therapies for autoimmune diseases. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">&#147;Dan brings an exceptional combination of strategic insight, rare disease expertise, and business development acumen, making him an outstanding addition
to our Board,&#148; said Patrick J. McEnany, Chairman of the Board of Catalyst. &#147;His leadership in advancing transformative therapies, paired with a proven history of delivering results across the full development continuum, will be
instrumental as Catalyst continues to execute its disciplined growth strategy, which includes maximizing our current rare disease portfolio and acquiring strategically aligned assets.&#148; </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">From 2008 to 2023, Dr.&nbsp;Curran held roles of increasing responsibility at Takeda Pharmaceutical Company, serving as Senior Vice President and Head of the
Rare Genetics and Hematology Therapeutic Area Unit from January 2019 through December 2023. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">&#147;I&#146;m honored to join the Board of Catalyst and
support its mission to deliver innovative therapies to patients with serious and underserved conditions,&#148; said Dr.&nbsp;Curran. &#147;Catalyst has built a strong foundation through disciplined execution and strategic asset acquisition, and I
look forward to contributing to the Company&#146;s continued growth and long-term value creation.&#148; </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Prior to his tenure at Takeda, Dr.&nbsp;Curran
served as Vice President of Corporate Development at Millennium Pharmaceuticals, Inc., from 1999 to 2008. Earlier in his career, he held a business development role in the product planning and acquisition group at DuPont Merck Pharmaceuticals. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Dr.&nbsp;Curran previously served on the board of directors of Tome Biosciences, a private biotechnology company, and currently serves on the Board of
Directors of Xilio Therapeutics, Inc. (NASDAQ: XLO), a clinical-stage biotechnology company discovering and developing tumor-activated, or masked, immuno-oncology <FONT STYLE="white-space:nowrap">(I-O)</FONT> therapies with the goal of significantly
improving outcomes for people living with cancer without the systemic side effects of current <FONT STYLE="white-space:nowrap">I-O</FONT> treatments. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Dr.&nbsp;Curran received an M.D. from the University of Pennsylvania School of Medicine, an M.B.A. from The Wharton School of the University of Pennsylvania,
and a B.S. in chemistry from King&#146;s College. </P>
</DIV></Center>


<p style="margin-top:1em; margin-bottom:0em; page-break-before:always"> </p>
<HR SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

<Center><DIV STYLE="width:8.5in" align="left">
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>About&nbsp;Catalyst Pharmaceuticals </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Catalyst Pharmaceuticals, Inc. (Nasdaq: CPRX), is a biopharmaceutical company committed to improving the lives of patients with rare diseases. With a proven
track record of bringing life-changing treatments to the market, we focus on <FONT STYLE="white-space:nowrap">in-licensing,</FONT> commercializing, and developing innovative therapies. Guided by our deep commitment to patient care, we prioritize
accessibility, ensuring patients receive the care they need through a comprehensive suite of support services designed to provide seamless access and ongoing assistance. Catalyst maintains a well-established U.S. presence, which remains the
cornerstone of our commercial strategy, while continuously evaluating strategic opportunities to expand our global footprint. Catalyst, headquartered in Coral Gables, Fla., was recognized on the Forbes 2025 list as one of America&#146;s Most
Successful <FONT STYLE="white-space:nowrap">Mid-Cap</FONT> Companies and on the 2024 Deloitte Technology Fast 500<SUP STYLE="font-size:75%; vertical-align:top">&#153;</SUP> list as one of North America&#146;s Fastest-Growing Companies. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">For more information, please visit Catalyst&#146;s website at&nbsp;<U>www.catalystpharma.com</U>.</P>
<P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Forward-Looking Statements </B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">This press release contains
forward-looking statements, as that term is defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve known and unknown risks and uncertainties, which may cause Catalyst&#146;s actual results in future
periods to differ materially from forecasted results. A number of factors, including those factors described in Catalyst&#146;s Annual Report on Form <FONT STYLE="white-space:nowrap">10-K</FONT> for the fiscal year 2024 and its subsequent filings
with the U.S. Securities and Exchange Commission (&#147;SEC&#148;), could adversely affect Catalyst. Copies of Catalyst&#146;s filings with the SEC are available from the SEC, may be found on Catalyst&#146;s website, or may be obtained upon request
from Catalyst. Catalyst does not undertake any obligation to update the information contained herein, which speaks only as of this Date. </P> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Source: Catalyst
Pharmaceuticals, Inc. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Investor Contact </B></P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Mary
Coleman, Catalyst Pharmaceuticals, Inc. </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">(305) <FONT STYLE="white-space:nowrap">420-3200</FONT> </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><U>ir@catalystpharma.com </U></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Media Contact </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">David Schull, Russo Partners </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">(858) <FONT
STYLE="white-space:nowrap">717-2310</FONT> </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><U>david.schull@russopartnersllc.com </U></P>
</DIV></Center>

</BODY></HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>3
<FILENAME>cprx-20250801.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii"?>
<!-- DFIN - https://www.dfinsolutions.com/ -->
<!-- CTU Version: Release master Build:20241122.1 -->
<!-- Creation date: 8/4/2025 9:42:24 PM Eastern Time -->
<!-- Copyright (c) 2025 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<xsd:schema
  xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric"
  xmlns:num="http://www.xbrl.org/dtr/type/numeric"
  xmlns:us-types="http://fasb.org/us-types/2024"
  xmlns:cprx="http://www.catalystpharma.com/20250801"
  xmlns:dei="http://xbrl.sec.gov/dei/2024"
  xmlns:xbrli="http://www.xbrl.org/2003/instance"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
  attributeFormDefault="unqualified"
  elementFormDefault="qualified"
  targetNamespace="http://www.catalystpharma.com/20250801"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
    <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase" />
    <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2024/dei-2024.xsd" namespace="http://xbrl.sec.gov/dei/2024" />
    <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/numeric" />
    <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/non-numeric" />
    <xsd:import schemaLocation="https://xbrl.sec.gov/naics/2024/naics-2024.xsd" namespace="http://xbrl.sec.gov/naics/2024" />
    <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="cprx-20250801_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="cprx-20250801_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple" />
      <link:roleType roleURI="http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation">
        <link:definition>100000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
</xsd:schema>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>4
<FILENAME>cprx-20250801_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFIN - https://www.dfinsolutions.com/ -->
<!-- CTU Version: Release master Build:20241122.1 -->
<!-- Creation date: 8/4/2025 9:42:24 PM Eastern Time -->
<!-- Copyright (c) 2025 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CoverAbstract" xlink:type="locator" xlink:label="dei_CoverAbstract" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CoverAbstract" xlink:to="dei_CoverAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_CoverAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_CoverAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cover [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security Exchange Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation State Country Code</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation State Country Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity File Number</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityTaxIdentificationNumber" xlink:to="dei_EntityTaxIdentificationNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine1" xlink:to="dei_EntityAddressAddressLine1_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line One</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressAddressLine2" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine2" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine2" xlink:to="dei_EntityAddressAddressLine2_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line Two</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine2_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line Two</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, City or Town</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, State or Province</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Postal Zip Code</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_WrittenCommunications" xlink:to="dei_WrittenCommunications_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_WrittenCommunications_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Written Communications</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_WrittenCommunications_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Written Communications</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SolicitingMaterial" xlink:to="dei_SolicitingMaterial_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SolicitingMaterial_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Soliciting Material</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_SolicitingMaterial_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Soliciting Material</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementTenderOffer" xlink:to="dei_PreCommencementTenderOffer_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pre Commencement Tender Offer</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre Commencement Tender Offer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementIssuerTenderOffer" xlink:to="dei_PreCommencementIssuerTenderOffer_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pre Commencement Issuer Tender Offer</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre Commencement Issuer Tender Offer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security 12b Title</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security 12b Title</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Emerging Growth Company</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Emerging Growth Company</link:label>
  </link:labelLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>5
<FILENAME>cprx-20250801_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFIN - https://www.dfinsolutions.com/ -->
<!-- CTU Version: Release master Build:20241122.1 -->
<!-- Creation date: 8/4/2025 9:42:24 PM Eastern Time -->
<!-- Copyright (c) 2025 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase
    xmlns:link="http://www.xbrl.org/2003/linkbase"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
    xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation" xlink:href="cprx-20250801.xsd#Role_DocumentDocumentAndEntityInformation" xlink:type="simple" />
  <link:presentationLink xlink:type="extended" xlink:role="http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CoverAbstract" xlink:type="locator" xlink:label="dei_CoverAbstract" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_SecurityExchangeName" order="22.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_AmendmentFlag" order="23.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityCentralIndexKey" order="24.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_DocumentType" order="26.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_DocumentPeriodEndDate" order="27.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityRegistrantName" order="28.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityIncorporationStateCountryCode" order="29.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityFileNumber" order="30.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityTaxIdentificationNumber" order="31.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressAddressLine1" order="32.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressAddressLine2" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine2" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressAddressLine2" order="33.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressCityOrTown" order="34.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressStateOrProvince" order="35.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressPostalZipCode" order="36.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_CityAreaCode" order="37.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_LocalPhoneNumber" order="38.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_WrittenCommunications" order="39.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_SolicitingMaterial" order="40.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_PreCommencementTenderOffer" order="41.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_PreCommencementIssuerTenderOffer" order="42.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_Security12bTitle" order="43.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_TradingSymbol" order="44.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2024/dei-2024.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityEmergingGrowthCompany" order="45.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
  </link:presentationLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>7
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.25.2</span><table class="report" border="0" cellspacing="2" id="id2">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Document and Entity Information<br></strong></div></th>
<th class="th"><div>Aug. 01, 2025</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_CoverAbstract', window );"><strong>Cover [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_SecurityExchangeName', window );">Security Exchange Name</a></td>
<td class="text">NASDAQ<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0001369568<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentType', window );">Document Type</a></td>
<td class="text">8-K<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentPeriodEndDate', window );">Document Period End Date</a></td>
<td class="text">Aug.  01,  2025<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">CATALYST PHARMACEUTICALS, INC.<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityIncorporationStateCountryCode', window );">Entity Incorporation State Country Code</a></td>
<td class="text">DE<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">001-33057<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">76-0837053<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address, Address Line One</a></td>
<td class="text">355 Alhambra Circle<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressAddressLine2', window );">Entity Address, Address Line Two</a></td>
<td class="text">Suite 801<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address, City or Town</a></td>
<td class="text">Coral Gables<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address, State or Province</a></td>
<td class="text">FL<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address, Postal Zip Code</a></td>
<td class="text">33134<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">(305)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">420-3200<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_WrittenCommunications', window );">Written Communications</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_SolicitingMaterial', window );">Soliciting Material</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_PreCommencementTenderOffer', window );">Pre Commencement Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_PreCommencementIssuerTenderOffer', window );">Pre Commencement Issuer Tender Offer</a></td>
<td class="text">false<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_Security12bTitle', window );">Security 12b Title</a></td>
<td class="text">Common Stock, par value $0.001 per share<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_TradingSymbol', window );">Trading Symbol</a></td>
<td class="text">CPRX<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AmendmentFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AmendmentFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CityAreaCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Area code of city</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CityAreaCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CoverAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Cover page.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CoverAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentType">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:submissionTypeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Address Line 1 such as Attn, Building Name, Street Name</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine2">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Address Line 2 such as Street or Suite number</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine2</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressCityOrTown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Name of the City or Town</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressCityOrTown</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressPostalZipCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Code for the postal or zip code</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressPostalZipCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressStateOrProvince">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Name of the state or province.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressStateOrProvince</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:stateOrProvinceItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCentralIndexKey</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:centralIndexKeyItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Indicate if registrant meets the emerging growth company criteria.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityEmergingGrowthCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFileNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFileNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fileNumberItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityIncorporationStateCountryCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Two-character EDGAR code representing the state or country of incorporation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityIncorporationStateCountryCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarStateCountryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityRegistrantName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityRegistrantName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityTaxIdentificationNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityTaxIdentificationNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:employerIdItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LocalPhoneNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Local phone number for entity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LocalPhoneNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_PreCommencementIssuerTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 13e<br> -Subsection 4c<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementIssuerTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_PreCommencementTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 14d<br> -Subsection 2b<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_PreCommencementTenderOffer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_Security12bTitle">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Title of a 12(b) registered security.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_Security12bTitle</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:securityTitleItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SecurityExchangeName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Name of the Exchange on which a security is registered.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection d1-1<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SecurityExchangeName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarExchangeCodeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SolicitingMaterial">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 14a<br> -Subsection 12<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SolicitingMaterial</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_TradingSymbol">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Trading symbol of an instrument as listed on an exchange.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_TradingSymbol</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:tradingSymbolItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_WrittenCommunications">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Securities Act<br> -Number 230<br> -Section 425<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_WrittenCommunications</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>8
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
// Edgar(tm) Renderer was created by staff of the U.S. Securities and Exchange Commission.  Data and content created by government employees within the scope of their employment are not subject to domestic copyright protection. 17 U.S.C. 105.
var Show={};Show.LastAR=null,Show.showAR=function(a,r,w){if(Show.LastAR)Show.hideAR();var e=a;while(e&&e.nodeName!='TABLE')e=e.nextSibling;if(!e||e.nodeName!='TABLE'){var ref=((window)?w.document:document).getElementById(r);if(ref){e=ref.cloneNode(!0);
e.removeAttribute('id');a.parentNode.appendChild(e)}}
if(e)e.style.display='block';Show.LastAR=e};Show.hideAR=function(){Show.LastAR.style.display='none'};Show.toggleNext=function(a){var e=a;while(e.nodeName!='DIV')e=e.nextSibling;if(!e.style){}else if(!e.style.display){}else{var d,p_;if(e.style.display=='none'){d='block';p='-'}else{d='none';p='+'}
e.style.display=d;if(a.textContent){a.textContent=p+a.textContent.substring(1)}else{a.innerText=p+a.innerText.substring(1)}}}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>9
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
/* Updated 2009-11-04 */
/* v2.2.0.24 */

/* DefRef Styles */
.report table.authRefData{
	background-color: #def;
	border: 2px solid #2F4497;
	font-size: 1em;
	position: absolute;
}

.report table.authRefData a {
	display: block;
	font-weight: bold;
}

.report table.authRefData p {
	margin-top: 0px;
}

.report table.authRefData .hide {
	background-color: #2F4497;
	padding: 1px 3px 0px 0px;
	text-align: right;
}

.report table.authRefData .hide a:hover {
	background-color: #2F4497;
}

.report table.authRefData .body {
	height: 150px;
	overflow: auto;
	width: 400px;
}

.report table.authRefData table{
	font-size: 1em;
}

/* Report Styles */
.pl a, .pl a:visited {
	color: black;
	text-decoration: none;
}

/* table */
.report {
	background-color: white;
	border: 2px solid #acf;
	clear: both;
	color: black;
	font: normal 8pt Helvetica, Arial, san-serif;
	margin-bottom: 2em;
}

.report hr {
	border: 1px solid #acf;
}

/* Top labels */
.report th {
	background-color: #acf;
	color: black;
	font-weight: bold;
	text-align: center;
}

.report th.void	{
	background-color: transparent;
	color: #000000;
	font: bold 10pt Helvetica, Arial, san-serif;
	text-align: left;
}

.report .pl {
	text-align: left;
	vertical-align: top;
	white-space: normal;
	width: 200px;
	white-space: normal; /* word-wrap: break-word; */
}

.report td.pl a.a {
	cursor: pointer;
	display: block;
	width: 200px;
	overflow: hidden;
}

.report td.pl div.a {
	width: 200px;
}

.report td.pl a:hover {
	background-color: #ffc;
}

/* Header rows... */
.report tr.rh {
	background-color: #acf;
	color: black;
	font-weight: bold;
}

/* Calendars... */
.report .rc {
	background-color: #f0f0f0;
}

/* Even rows... */
.report .re, .report .reu {
	background-color: #def;
}

.report .reu td {
	border-bottom: 1px solid black;
}

/* Odd rows... */
.report .ro, .report .rou {
	background-color: white;
}

.report .rou td {
	border-bottom: 1px solid black;
}

.report .rou table td, .report .reu table td {
	border-bottom: 0px solid black;
}

/* styles for footnote marker */
.report .fn {
	white-space: nowrap;
}

/* styles for numeric types */
.report .num, .report .nump {
	text-align: right;
	white-space: nowrap;
}

.report .nump {
	padding-left: 2em;
}

.report .nump {
	padding: 0px 0.4em 0px 2em;
}

/* styles for text types */
.report .text {
	text-align: left;
	white-space: normal;
}

.report .text .big {
	margin-bottom: 1em;
	width: 17em;
}

.report .text .more {
	display: none;
}

.report .text .note {
	font-style: italic;
	font-weight: bold;
}

.report .text .small {
	width: 10em;
}

.report sup {
	font-style: italic;
}

.report .outerFootnotes {
	font-size: 1em;
}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>11
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<XML>
<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.25.2</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>1</ContextCount>
  <ElementCount>23</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>0</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>0</UnitCount>
  <MyReports>
    <Report instance="d17349d8k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>100000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>cprx-20250801.xsd</File>
    <File>cprx-20250801_lab.xml</File>
    <File>cprx-20250801_pre.xml</File>
    <File doctype="8-K" isOnlyDei="true" original="d17349d8k.htm">d17349d8k.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="23">http://xbrl.sec.gov/dei/2024</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>14
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
{
 "version": "2.2",
 "instance": {
  "d17349d8k.htm": {
   "nsprefix": "cprx",
   "nsuri": "http://www.catalystpharma.com/20250801",
   "dts": {
    "schema": {
     "local": [
      "cprx-20250801.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd",
      "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd",
      "https://www.xbrl.org/dtr/type/2022-03-31/types.xsd",
      "https://xbrl.sec.gov/dei/2024/dei-2024.xsd",
      "https://xbrl.sec.gov/naics/2024/naics-2024.xsd"
     ]
    },
    "labelLink": {
     "local": [
      "cprx-20250801_lab.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "cprx-20250801_pre.xml"
     ]
    },
    "inline": {
     "local": [
      "d17349d8k.htm"
     ]
    }
   },
   "keyStandard": 23,
   "keyCustom": 0,
   "axisStandard": 0,
   "axisCustom": 0,
   "memberStandard": 0,
   "memberCustom": 0,
   "hidden": {
    "total": 3,
    "http://xbrl.sec.gov/dei/2024": 3
   },
   "contextCount": 1,
   "entityCount": 1,
   "segmentCount": 0,
   "elementCount": 24,
   "unitCount": 0,
   "baseTaxonomies": {
    "http://xbrl.sec.gov/dei/2024": 23
   },
   "report": {
    "R1": {
     "role": "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation",
     "longName": "100000 - Document - Document and Entity Information",
     "shortName": "Document and Entity Information",
     "isDefault": "true",
     "groupType": "document",
     "subGroupType": "",
     "menuCat": "Cover",
     "order": "1",
     "firstAnchor": {
      "contextRef": "duration_2025-08-01_to_2025-08-01",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d17349d8k.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "duration_2025-08-01_to_2025-08-01",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d17349d8k.htm",
      "first": true,
      "unique": true
     }
    }
   },
   "tag": {
    "dei_AmendmentFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "AmendmentFlag",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amendment Flag",
        "terseLabel": "Amendment Flag",
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission."
       }
      }
     },
     "auth_ref": []
    },
    "dei_CityAreaCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "CityAreaCode",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "City Area Code",
        "terseLabel": "City Area Code",
        "documentation": "Area code of city"
       }
      }
     },
     "auth_ref": []
    },
    "dei_CoverAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "CoverAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Cover [Abstract]",
        "terseLabel": "Cover [Abstract]",
        "documentation": "Cover page."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentPeriodEndDate": {
     "xbrltype": "dateItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentPeriodEndDate",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Period End Date",
        "terseLabel": "Document Period End Date",
        "documentation": "For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentType": {
     "xbrltype": "submissionTypeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "DocumentType",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Type",
        "terseLabel": "Document Type",
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressAddressLine1": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressAddressLine1",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Address Line One",
        "terseLabel": "Entity Address, Address Line One",
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressAddressLine2": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressAddressLine2",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Address Line Two",
        "terseLabel": "Entity Address, Address Line Two",
        "documentation": "Address Line 2 such as Street or Suite number"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressCityOrTown": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressCityOrTown",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, City or Town",
        "terseLabel": "Entity Address, City or Town",
        "documentation": "Name of the City or Town"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressPostalZipCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressPostalZipCode",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Postal Zip Code",
        "terseLabel": "Entity Address, Postal Zip Code",
        "documentation": "Code for the postal or zip code"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressStateOrProvince": {
     "xbrltype": "stateOrProvinceItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityAddressStateOrProvince",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, State or Province",
        "terseLabel": "Entity Address, State or Province",
        "documentation": "Name of the state or province."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityCentralIndexKey": {
     "xbrltype": "centralIndexKeyItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityCentralIndexKey",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Central Index Key",
        "terseLabel": "Entity Central Index Key",
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK."
       }
      }
     },
     "auth_ref": [
      "r1"
     ]
    },
    "dei_EntityEmergingGrowthCompany": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityEmergingGrowthCompany",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Emerging Growth Company",
        "terseLabel": "Entity Emerging Growth Company",
        "documentation": "Indicate if registrant meets the emerging growth company criteria."
       }
      }
     },
     "auth_ref": [
      "r1"
     ]
    },
    "dei_EntityFileNumber": {
     "xbrltype": "fileNumberItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityFileNumber",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity File Number",
        "terseLabel": "Entity File Number",
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityIncorporationStateCountryCode": {
     "xbrltype": "edgarStateCountryItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityIncorporationStateCountryCode",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Incorporation State Country Code",
        "terseLabel": "Entity Incorporation State Country Code",
        "documentation": "Two-character EDGAR code representing the state or country of incorporation."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityRegistrantName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityRegistrantName",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Registrant Name",
        "terseLabel": "Entity Registrant Name",
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC."
       }
      }
     },
     "auth_ref": [
      "r1"
     ]
    },
    "dei_EntityTaxIdentificationNumber": {
     "xbrltype": "employerIdItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "EntityTaxIdentificationNumber",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Tax Identification Number",
        "terseLabel": "Entity Tax Identification Number",
        "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS."
       }
      }
     },
     "auth_ref": [
      "r1"
     ]
    },
    "dei_LocalPhoneNumber": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "LocalPhoneNumber",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Local Phone Number",
        "terseLabel": "Local Phone Number",
        "documentation": "Local phone number for entity."
       }
      }
     },
     "auth_ref": []
    },
    "dei_PreCommencementIssuerTenderOffer": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "PreCommencementIssuerTenderOffer",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pre Commencement Issuer Tender Offer",
        "terseLabel": "Pre Commencement Issuer Tender Offer",
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r3"
     ]
    },
    "dei_PreCommencementTenderOffer": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "PreCommencementTenderOffer",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pre Commencement Tender Offer",
        "terseLabel": "Pre Commencement Tender Offer",
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r5"
     ]
    },
    "dei_Security12bTitle": {
     "xbrltype": "securityTitleItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "Security12bTitle",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Security 12b Title",
        "terseLabel": "Security 12b Title",
        "documentation": "Title of a 12(b) registered security."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "dei_SecurityExchangeName": {
     "xbrltype": "edgarExchangeCodeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "SecurityExchangeName",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Security Exchange Name",
        "terseLabel": "Security Exchange Name",
        "documentation": "Name of the Exchange on which a security is registered."
       }
      }
     },
     "auth_ref": [
      "r2"
     ]
    },
    "dei_SolicitingMaterial": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "SolicitingMaterial",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Soliciting Material",
        "terseLabel": "Soliciting Material",
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r4"
     ]
    },
    "dei_TradingSymbol": {
     "xbrltype": "tradingSymbolItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "TradingSymbol",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Symbol",
        "terseLabel": "Trading Symbol",
        "documentation": "Trading symbol of an instrument as listed on an exchange."
       }
      }
     },
     "auth_ref": []
    },
    "dei_WrittenCommunications": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2024",
     "localname": "WrittenCommunications",
     "presentation": [
      "http://www.catalystpharma.com//20250801/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Written Communications",
        "terseLabel": "Written Communications",
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act."
       }
      }
     },
     "auth_ref": [
      "r6"
     ]
    }
   }
  }
 },
 "std_ref": {
  "r0": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b"
  },
  "r1": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r2": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r3": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "13e",
   "Subsection": "4c"
  },
  "r4": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "14a",
   "Subsection": "12"
  },
  "r5": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "14d",
   "Subsection": "2b"
  },
  "r6": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Securities Act",
   "Number": "230",
   "Section": "425"
  }
 }
}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>15
<FILENAME>0001193125-25-172653-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
begin 644 0001193125-25-172653-xbrl.zip
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M2"!/)M*6^%%$5OVQ-Q&[K8_](?:';=[O[_Y'9V!SN'W\0Q]_^F:O^.\LAW_
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MS+;CFMNV;.TPD\UI;FZZ4U]?U5L'?_X!4$L#!!0    ( .Z#!%OT!3$7?@8
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M44Z>G.&?2$_$-=+AG RM3*-+#>H9DMHF*F?B[Y;]-[;>R=LW!/\PC4+GI>W
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MQ['XC=C4B#*J,%X8SW#J<^J)DFEIJC:MR9?\2I6 :@<X?^*$$)!,,6DK84E
MYAHMR<R:I]Q>@PDH!4E_G82#9G.G.+EJR&M^8V8='*J)':YWG$Z/A;4CJBZE
M':,.S[DW>-8S2!=[H"COX52U_ U6QV(Z(*XNK@.&';:F-]C</6"$:3R65E%3
M74A%GX[-S]ZQ&0!ZQ5MT<H-/M:="VA%7G]:.88?M%V^PK>>&(4R9[:@PISQ<
ME&NK"ZW<KV-VZ1DS7-))E4F5I_8),PQ=.<<I?M65R8D(OQ"JZD2_8-\!OO(,
M\!WC\#!/QZ!.H[FMJSJZ;:\;3N=GGG$:T64OP32P"5MO*[P&VL$@52=XT+C#
M6?<,9R=),,EZ\])G NJGH2P-4'6,I:8=0G_6W8<ZT_A:A T?$38^(_1M;;[I
M11??/JJ17(A7 =R6>X)OV[*#Y\\*O="5_%'L40V4?&9VV_XU!/=B>()QS[=C
M>>$GRX'4AO*_6';ZZJ(\@B<<=UP[BO[LR]CYI*. GL*MJ*DNJ:)/Q\:?S1?[
M.R0?S*0X<9VWKZLNHWVOCI,_&RY_H#\#HBO3="XVRQQ]+*P#XNH2.V#88?-G
M&^5)<A8SP\3T'F_&BEEK1_YL6J*L+K RMQM:37\V4P8*[) #?%K*?P>Q)PC4
MXV1R_+3X4H3JTGO)M:/HSQ[*3F]Z6L]!?3W+DCC>$"WQ[KCZL['B#F;4&^,1
M,_SD RB?==7EMN_5<?)G]V2DJ#WG^+1*Q_+HV]V.J+J$=HPZ/+[MC]RFH*;8
MCP]*+LP,YXJ,BA./GQP(45UT+]IV(/^'S9'K:"\U?2RPAV#75^P_>Z032_X!
M4$L#!!0    ( .Z#!%NDJFTE !0  ,%Q   -    9#$W,S0Y9#AK+FAT;>U=
M:W/:2-;^[E_1179FG"HN$N +V/$6P62&C6\OD$UVOTPU4F-Z+-0:=<N&_?7O
M.=V2$#>#;6PG,TY5;(1:?3G7YYP^:A__<SSRR"T+)1?^AU_LHO4+8;XC7.Y?
M?_BET6VVV[_\\V3G>*B@&33U9=UE_$-NJ%10+Y7&_= K2N84K\5M"6Z4RE:Y
MFHL;1K*@)@&3:>L!E?VB"*]+R9V9YK[P_6B4-KZ[NROJ[O$!5X4E?*($C0K0
MBH7<29X;>]R_F7GLKJ(?LFNU6DG?39HNM$P'*%M6I82W^U2RI+D3A..9Y@Y5
MU)M(%0QI.*)%1XQP!7O6H66GLY%\V5R@?[OT[?RLZPS9B!:X+Q7UG72D2(4K
MYU4KP=VD(9>B6K8/[EE$W")]8+RJK0UM?5@R^_:Q<S9MKI:WGS8MJ9#Z<B"
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MA.(6AYWU@ ?@OYE'[\ SKD35RMV$W:EPKVG^2/H].O(P!/[$/0;W^C#4XUW
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M$"ORD:4D ((IWFG(*1UTNY4T4<;@@$7Y9%SZHP6JCYE(TX; (\,TG)O<$:O
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M,#(U,#@P,5]L86(N>&UL4$L! A0#%     @ [H,$6R%XS"C+!   2BP  !4
M             ( !( H  &-P<G@M,C R-3 X,#%?<')E+GAM;%!+ 0(4 Q0
M   ( .Z#!%NDJFTE !0  ,%Q   -              "  1X/  !D,3<S-#ED
M.&LN:'1M4$L! A0#%     @ [H,$6_'V4#J,"P  9"   !
M ( !22,  &0Q-S,T.61E>#DY,2YH=&U02P4&      4 !0 ^ 0   R\

end
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>16
<FILENAME>d17349d8k_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<XML>
<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2024"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="cprx-20250801.xsd" xlink:type="simple"/>
    <context id="duration_2025-08-01_to_2025-08-01">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0001369568</identifier>
        </entity>
        <period>
            <startDate>2025-08-01</startDate>
            <endDate>2025-08-01</endDate>
        </period>
    </context>
    <dei:SecurityExchangeName
      contextRef="duration_2025-08-01_to_2025-08-01"
      id="Hidden_dei_SecurityExchangeName">NASDAQ</dei:SecurityExchangeName>
    <dei:AmendmentFlag contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-263">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="duration_2025-08-01_to_2025-08-01"
      id="Hidden_dei_EntityCentralIndexKey">0001369568</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-274">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-275">2025-08-01</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-276">CATALYST PHARMACEUTICALS, INC.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-277">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-278">001-33057</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-279">76-0837053</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-280">355 Alhambra Circle</dei:EntityAddressAddressLine1>
    <dei:EntityAddressAddressLine2 contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-281">Suite 801</dei:EntityAddressAddressLine2>
    <dei:EntityAddressCityOrTown contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-282">Coral Gables</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-283">FL</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-284">33134</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-285">(305)</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-286">420-3200</dei:LocalPhoneNumber>
    <dei:WrittenCommunications contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-287">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-288">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-289">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-290">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-291">Common Stock, par value $0.001 per share</dei:Security12bTitle>
    <dei:TradingSymbol contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-292">CPRX</dei:TradingSymbol>
    <dei:EntityEmergingGrowthCompany contextRef="duration_2025-08-01_to_2025-08-01" id="ixv-293">false</dei:EntityEmergingGrowthCompany>
</xbrl>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
