<SEC-DOCUMENT>0001104659-14-045749.txt : 20140805
<SEC-HEADER>0001104659-14-045749.hdr.sgml : 20140805
<ACCEPTANCE-DATETIME>20140612215754
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0001104659-14-045749
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20140612

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Amphastar Pharmaceuticals, Inc.
		CENTRAL INDEX KEY:			0001297184
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				330702205
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		CORRESP

	BUSINESS ADDRESS:	
		STREET 1:		11570 SIXTH STREET
		CITY:			RANCHO CUCAMONGA
		STATE:			CA
		ZIP:			91730
		BUSINESS PHONE:		909-980-9484

	MAIL ADDRESS:	
		STREET 1:		11570 SIXTH STREET
		CITY:			RANCHO CUCAMONGA
		STATE:			CA
		ZIP:			91730
</SEC-HEADER>
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<TYPE>CORRESP
<SEQUENCE>1
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">K&amp;L   GATES LLP</font></b><font size="2" style="font-size:10.0pt;"><br>   1 PARK PLAZA<br>   TWELFTH FLOOR<br>   IRVINE, CA 92614<br>   T +1 949 253 0900 F +1 949 253 0902 klgates.com</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">June&nbsp;13, 2014</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">VIA EDGAR AND OVERNIGHT DELIVERY</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">U.S. Securities and Exchange Commission</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Division of Corporation Finance</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">100 F. Street, N.E.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Washington, D.C. 20549</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Attn:</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Jeffrey P. Riedler, Assistant Director</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt .5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Re:</font></b><b><font size="1" style="font-size:3.0pt;font-weight:bold;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Amphastar Pharmaceuticals,&nbsp;Inc.</font></b></p>
<p style="margin:0in 0in .0001pt 72.7pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Registration Statement on Form&nbsp;S-1; Amendment No. 2</font></b></p>
<p style="margin:0in 0in .0001pt 72.7pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Submitted May&nbsp;20, 2014</font></b></p>
<p style="margin:0in 0in .0001pt 72.7pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">File No. 333-196097</font></b></p>
<p style="margin:0in 0in .0001pt .5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Ladies and Gentlemen,</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">On behalf of Amphastar Pharmaceuticals,&nbsp;Inc., we are concurrently filing with the U.S. Securities and Exchange Commission (the &#147;<b>Commission</b>&#148;) via EDGAR the above-referenced Amendment No. 2 (&#147;<b>Amendment No. 2</b>&#148;) to the Registration Statement on Form&nbsp;S-1 (the &#147;<b>Registration Statement</b>&#148;). The Registration Statement was originally filed with the Commission on May&nbsp;20, 2014, and was amended by Amendment No. 1 (&#147;<b>Amendment No. 1</b>&#148;) to the Registration Statement on June 5, 2014.</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">We have also enclosed with the copy of this letter that is being transmitted via courier three copies of Amendment No. 2 in paper format, marked to show changes from Amendment No. 1.</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">If you have any questions or comments concerning these responses, please do not hesitate to call me at (949) 623-3574 or email me at david.allen@klgates.com.</font></p>
<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sincerely,</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/   David B. Allen </font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">K&amp;L   Gates LLP</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">David   B. Allen</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt 3.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">cc:</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Jason Shandell, Amphastar Pharmaceuticals,&nbsp;Inc.</font></p>
<p style="margin:0in 0in .0001pt;text-indent:36.7pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Michael Hedge, K&amp;L Gates LLP</font></p>
<p style="margin:0in 0in .0001pt;text-indent:36.7pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Donna M. Petkanics, Wilson Sonsini Goodrich &amp; Rosati, P.C.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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