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198642-64-7

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198642-64-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 198642-64-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,8,6,4 and 2 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 198642-64:
(8*1)+(7*9)+(6*8)+(5*6)+(4*4)+(3*2)+(2*6)+(1*4)=187
187 % 10 = 7
So 198642-64-7 is a valid CAS Registry Number.

198642-64-7Relevant articles and documents

Enantioselective synthesis of β-substituted primary and secondary amines by alkylation of (R)-phenylglycinol amide enolates

Jullian, Valérie,Quirion, Jean-Charles,Husson, Henri-Philippe

, p. 1091 - 1097 (1997)

General and convenient syntheses of optically active β-substituted secondary or primary amines 4 and 8 are described. The method is based on diastereoselective alkylation of amides 1 and 5 derived from R-(-)-phenylglycinol followed by reduction and removal of the chiral appendage. This procedure has also been applied to the preparation of 1,4-amino alcohols 12 and γ-amino esters 14.

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