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929431-57-2

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929431-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 929431-57-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,2,9,4,3 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 929431-57:
(8*9)+(7*2)+(6*9)+(5*4)+(4*3)+(3*1)+(2*5)+(1*7)=192
192 % 10 = 2
So 929431-57-2 is a valid CAS Registry Number.

929431-57-2Relevant articles and documents

PROCESS FOR PRODUCING OPTICALLY ACTIVE s-AMINO ALCOHOL

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Page/Page column 27, (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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