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641629-39-2

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641629-39-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 641629-39-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,1,6,2 and 9 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 641629-39:
(8*6)+(7*4)+(6*1)+(5*6)+(4*2)+(3*9)+(2*3)+(1*9)=162
162 % 10 = 2
So 641629-39-2 is a valid CAS Registry Number.

641629-39-2Downstream Products

641629-39-2Relevant articles and documents

MAOS of quinoxalines, conjugated pyrazolylquinoxalines and fused pyrazoloquinoxalines from L-ascorbic and D-isoascorbic acid

Ashry, El Sayed H. El,Atta, Kamal F.,Aboul-Ela, Salah,Beldi, Razika

, p. 1 - 16 (2007/10/03)

Microwave-assisted organic synthesis (MAOS) has been used to accelerate the conversion of L-ascorbic acid (1) and D-isoascorbic acid (2) to the title heterocycles by conversion to 3-(L-threo- or D-erythro-glycerol-1-yl) quinoxaline-2-carboxylic acid o-ami

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