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1187669-99-3

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1187669-99-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1187669-99-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,8,7,6,6 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1187669-99:
(9*1)+(8*1)+(7*8)+(6*7)+(5*6)+(4*6)+(3*9)+(2*9)+(1*9)=223
223 % 10 = 3
So 1187669-99-3 is a valid CAS Registry Number.

1187669-99-3Upstream product

1187669-99-3Downstream Products

1187669-99-3Relevant academic research and scientific papers

METHOD FOR PRODUCING OPTICALLY ACTIVE ESTER AND METHOD FOR PRODUCING OPTICALLY ACTIVE CARBOXYLIC ACID

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Page/Page column 6, (2010/09/18)

Disclosed is a method for producing an optically active ester by highly selectively esterifying one enantiomer of a racemic carboxylic acid, while producing an optically active carboxylic acid which is the other enantiomer. An optically active ester is produced while producing an optically active carboxylic acid at the same time by reacting a racemic carboxylic acid with a specific alcohol or phenol derivative in the presence of benzoic anhydride or a derivative thereof and a catalyst such as tetramisole or benzotetramisole, thereby selectively esterifying one enantiomer of the racemic carboxylic acid.

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