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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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<SEC-DOCUMENT>0001239241-09-000001.txt : 20090106
<SEC-HEADER>0001239241-09-000001.hdr.sgml : 20090106
<ACCEPTANCE-DATETIME>20090106165117
ACCESSION NUMBER:		0001239241-09-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090105
FILED AS OF DATE:		20090106
DATE AS OF CHANGE:		20090106

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			EVNIN ANTHONY B
		CENTRAL INDEX KEY:			0001239241

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50642
		FILM NUMBER:		09510554

	MAIL ADDRESS:	
		STREET 1:		C/O VENROCK ASSOCIATES
		STREET 2:		30 ROCKEFELLER PLAZA RM 5508
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			21264957

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MEMORY PHARMACEUTICALS CORP
		CENTRAL INDEX KEY:			0001062216
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				043363475

	BUSINESS ADDRESS:	
		STREET 1:		100 PHILIPS PARKWAY
		CITY:			MONTVALE
		STATE:			NJ
		ZIP:			07645
		BUSINESS PHONE:		2018027100

	MAIL ADDRESS:	
		STREET 1:		100 PHILIPS PARKWAY
		CITY:			MONTVALE
		STATE:			NJ
		ZIP:			07645
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-01-05</periodOfReport>

    <issuer>
        <issuerCik>0001062216</issuerCik>
        <issuerName>MEMORY PHARMACEUTICALS CORP</issuerName>
        <issuerTradingSymbol>MEMY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001239241</rptOwnerCik>
            <rptOwnerName>EVNIN ANTHONY B</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O VENROCK ASSOCIATES</rptOwnerStreet1>
            <rptOwnerStreet2>530 FIFTH AVENUE, 22ND FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10036</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (Right to Buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>.41</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-01-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2018-06-12</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">This option, which provided for vesting in full on June 13, 2009, was canceled in connection with the Issuer's merger with 900 North Point Acquisition Corporation on January 5, 2009.  In exchange, the Reporting Person received a cash payment of $2,000, which represents the difference between the exercise price of the option and the offer price of $0.61 per share multiplied by the number of shares underlying the option.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Anthony B. Evnin</signatureName>
        <signatureDate>2009-01-06</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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