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635304-44-8

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635304-44-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 635304-44-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,5,3,0 and 4 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 635304-44:
(8*6)+(7*3)+(6*5)+(5*3)+(4*0)+(3*4)+(2*4)+(1*4)=138
138 % 10 = 8
So 635304-44-8 is a valid CAS Registry Number.

635304-44-8Relevant articles and documents

PROCESS FOR PRODUCING OPTICALLY ACTIVE s-AMINO ALCOHOL

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Page/Page column 21, (2008/06/13)

A process for easily producing an optically active β-amino alcohol useful as a pharmaceutical intermediate from an inexpensive, readily available starting material is provided. A readily available α-substituted ketone is reacted with an optically active amine to yield a diastereomer mixture of an optically active α-substituted aminoketone. One of the diastereomers is isolated optionally after the diastereomers are converted to salts with an acid. The optically active α-substituted aminoketone or a salt thereof thus isolated was stereoselectively reduced to yield an optically active β-substituted amino alcohol. The optically active β-substituted amino alcohol is subjected to hydrogenolysis to produce an optically active β-amino alcohol or a salt thereof.

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