Cas 131959-66-5,C40H28N2O20

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Check Digit Verification of cas no

The CAS Registry Mumber 131959-66-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,5 and 9 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 131959-66:
(8*1)+(7*3)+(6*1)+(5*9)+(4*5)+(3*9)+(2*6)+(1*6)=145
145 % 10 = 5
So 131959-66-5 is a valid CAS Registry Number.

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131959-66-5Relevant articles and documents

Tannins and related compounds. XCVI. Structures of macaranins and macarinins, new hydrolyzable tannins possessing macaranoyl and tergalloyl ester groups, from the leaves of Macaranga sinensis (BAILL.) MUELL.-ARG.

Lin,Ishimatsu,Tanaka,Nonaka,Nishioka

, p. 1844 - 1851 (2007/10/02)

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131959-66-5