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205129-31-3

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205129-31-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 205129-31-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,1,2 and 9 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 205129-31:
(8*2)+(7*0)+(6*5)+(5*1)+(4*2)+(3*9)+(2*3)+(1*1)=93
93 % 10 = 3
So 205129-31-3 is a valid CAS Registry Number.

205129-31-3Downstream Products

205129-31-3Relevant articles and documents

Organocatalytic enantioselective michael addition of 4-hydroxycoumarin to α,β-unsaturated ketones: a simple synthesis of warfarin

Dong, Zhenhua,Wang, Lijia,Chen, Xiaohong,Liu, Xiaohua,Lin, Lili,Feng, Xiaoming

, p. 5192 - 5197 (2009)

A type of C2-symmetric secondary amine amide catalysts were developed for the asymmetric Michael addition of Ahydroxycoumarin to α,ss-unsaturated ketones. A series of important biologically and pharmaceutically active compounds were obtained in

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