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128745-31-3

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128745-31-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128745-31-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,7,4 and 5 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 128745-31:
(8*1)+(7*2)+(6*8)+(5*7)+(4*4)+(3*5)+(2*3)+(1*1)=143
143 % 10 = 3
So 128745-31-3 is a valid CAS Registry Number.

128745-31-3Relevant articles and documents

Improved procedures for the syntheses of pyrido- and pyrrolo[2,3-d]pyrimidines, and ribosides thereof

Itoh,Melik-Ohanjanian,Ishikawa,Kawahara,Mizuno,Honma,Hozumi,Ogura

, p. 3184 - 3190 (2007/10/02)

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