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153929-31-8

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153929-31-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 153929-31-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,3,9,2 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 153929-31:
(8*1)+(7*5)+(6*3)+(5*9)+(4*2)+(3*9)+(2*3)+(1*1)=148
148 % 10 = 8
So 153929-31-8 is a valid CAS Registry Number.

153929-31-8Relevant articles and documents

Easy and General Method for the Preparation of m- and p-Acylbenzoic Acids: A New Synthesis of rac-Suprofen

Camps, Pelayo,Gimenez, Silvia,Farres, Xavier,Mauleon, David,Carganico, Germano

, p. 641 - 644 (2007/10/02)

A method for the preparation of m- and p-acylbenzoic acids 3 based on the Claisen condensation of isophthalic or terephthalic diesters 1 with α-methylenecarboxylic esters 2 is described. p-Propionylbenzoic acid p-4 (R=Me) is used in a new synthesis of rac-suprofen (11). Key Words: Acylbenzoic acids / Claisen condensation / rac-Suprofen / Thalium(III) nitrate

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