<SEC-DOCUMENT>0001209191-19-000037.txt : 20190102
<SEC-HEADER>0001209191-19-000037.hdr.sgml : 20190102
<ACCEPTANCE-DATETIME>20190102112803
ACCESSION NUMBER:		0001209191-19-000037
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20181231
FILED AS OF DATE:		20190102
DATE AS OF CHANGE:		20190102

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Angulo Gonzalez David
		CENTRAL INDEX KEY:			0001644071

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36365
		FILM NUMBER:		19500555

	MAIL ADDRESS:	
		STREET 1:		C/O SCYNEXIS, INC.
		STREET 2:		3501 C TRICENTER BOULEVARD
		CITY:			DURHAM
		STATE:			NC
		ZIP:			27713

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SCYNEXIS INC
		CENTRAL INDEX KEY:			0001178253
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				562181648
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1 EVERTRUST PLAZA
		STREET 2:		13TH FLOOR
		CITY:			JERSEY CITY
		STATE:			NJ
		ZIP:			07302-6548
		BUSINESS PHONE:		201-884-5485

	MAIL ADDRESS:	
		STREET 1:		1 EVERTRUST PLAZA
		STREET 2:		13TH FLOOR
		CITY:			JERSEY CITY
		STATE:			NJ
		ZIP:			07302-6548
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-12-31</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001178253</issuerCik>
        <issuerName>SCYNEXIS INC</issuerName>
        <issuerTradingSymbol>SCYX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001644071</rptOwnerCik>
            <rptOwnerName>Angulo Gonzalez David</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1 EVERTRUST PLAZA, 13TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>JERSEY CITY</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07302-6548</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Medical Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-12-31</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>12000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.4959</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>121790</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Robert F. Joyce, Jr., by Power of Attorney</signatureName>
        <signatureDate>2019-01-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
