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40123-31-7

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40123-31-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 40123-31-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,1,2 and 3 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 40123-31:
(7*4)+(6*0)+(5*1)+(4*2)+(3*3)+(2*3)+(1*1)=57
57 % 10 = 7
So 40123-31-7 is a valid CAS Registry Number.

40123-31-7Downstream Products

40123-31-7Relevant articles and documents

A New and Efficient Esterification Reaction via Mixed Anhydrides by the Promotion of a Catalytic Amount of Lewis Acid

Miyashita, Mitsutomo,Shiina, Isamu,Miyoshi, So,Mukaiyama, Teruaki

, p. 1516 - 1527 (2007/10/02)

In the presence of a catalytic amount of Lewis acid, various carboxylic esters or S-phenyl carbothioates are prepared in excellent yields by the respective reactions of equimolar amounts of silyl carboxylates and alkyl silyl ethers or phenyl silyl sulfides with 4-trifluoromethylbenzoic anhydride.

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