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89971-20-0

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89971-20-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89971-20-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,9,7 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 89971-20:
(7*8)+(6*9)+(5*9)+(4*7)+(3*1)+(2*2)+(1*0)=190
190 % 10 = 0
So 89971-20-0 is a valid CAS Registry Number.

89971-20-0Downstream Products

89971-20-0Relevant articles and documents

Catalytic hydrogenation of methyl esters of some 1H-pyrazoline-3-carboxylic acids

Gorpinchenko,Petrov,Lozhkin,Galkin,Dokichev

experimental part, p. 1202 - 1207 (2010/04/26)

Hydrogenation over Raney nickel of the methyl ester of 1H-pyrazoline-3- carboxylic acid and also of its 4-phenyl and 5-methoxycarbonyl-substituted analogs, leads respectively to 3-aminopyrrolidin-2-one, its 4-phenyl- and 5-methoxycarbonyl derivatives, pre

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