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68636-57-7

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68636-57-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 68636-57-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,6,3 and 6 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 68636-57:
(7*6)+(6*8)+(5*6)+(4*3)+(3*6)+(2*5)+(1*7)=167
167 % 10 = 7
So 68636-57-7 is a valid CAS Registry Number.

68636-57-7Relevant 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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