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71671-11-9

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71671-11-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71671-11-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,6,7 and 1 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 71671-11:
(7*7)+(6*1)+(5*6)+(4*7)+(3*1)+(2*1)+(1*1)=119
119 % 10 = 9
So 71671-11-9 is a valid CAS Registry Number.

71671-11-9Relevant articles and documents

PREPARATION OF α,β-UNSATURATED CARBOXYLIC ACID ESTERS BY THE REACTION OF ACI-NITROESTERS WITH ETHOXYCARBONYLMETHYLENETRIPHENYLPHOSPHORANE

Mitsunobu, Oyo,Kimura, Junji,Shimizu, Tatsuhiko,Kawashima, Atsushi

, p. 927 - 930 (2007/10/02)

The reaction of ethoxycarbonylmethylenetriphenylphosphorane with aci-nitroesters derived from 2,6-di-t-butyl-4-nitrophenol and alcohols afforded α,β-unsaturated carboxylic esters.When mono-aci-nitroester of 1,3-butanediol or 1,6-hexanediol was used, (E)-ethyl 5-hydroxy-2-hexenoate or (E)-ethyl 8-hydroxy-2-octenoate was obtained.

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