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205752-51-8

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205752-51-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 205752-51-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,7,5 and 2 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 205752-51:
(8*2)+(7*0)+(6*5)+(5*7)+(4*5)+(3*2)+(2*5)+(1*1)=118
118 % 10 = 8
So 205752-51-8 is a valid CAS Registry Number.

205752-51-8Relevant articles and documents

Design and synthesis of haptens for application to the preparation of chiral 1,4-dihydropyridines

Ikeda, Kiyoshi,Kato, Tatsuhisa,Suzuki, Takehisa,Achiwa, Kazuo

, p. 518 - 522 (1998)

Lipase-catalyzed enzymatic hydrolysis of dimethyl esters of 1,4- dihydropyridines to the monoester, which is an important intermediate for the synthesis of optically active 1,4-dihydropyridines, does not proceed directly. This paper describes the design and synthesis of novel haptens having a phosphonate group containing the requisite oxyanionic character to mimic the tetrahedral intermediate of hydrolysis, and the application of these compounds for generating antibodies with catalytic ability for the enantioselective partial hydrolysis of the dicarboxylic dimethyl ester (1) of a 1,4-dihydropyridine derivative to generate the monocarboxylic acid (2).

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