Cas 91906-35-3,4-methyl-1,2,3,4-tetrahydrophthalic acid diethyl ester

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Check Digit Verification of cas no

The CAS Registry Mumber 91906-35-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,0 and 6 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 91906-35:
(7*9)+(6*1)+(5*9)+(4*0)+(3*6)+(2*3)+(1*5)=143
143 % 10 = 3
So 91906-35-3 is a valid CAS Registry Number.

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91906-35-3Relevant articles and documents

BISACYLATION OF THE ANHYDRIDE AND ESTERS OF 4-METHYL-1,2,3,4-TETRAHYDROPHTHALIC ACID

Dulenko, V. I.,Golyak, V. M.,Alekseev, N. N.,Gorenko, N. F.

, p. 1078 - 1081 (2007/10/02)

The bisacylation of the anhydride and esters of 4-methyl-1,2,3,4-tetrahydrophthalic acid by anhydrides of carboxylic acids in the presence of perchloric acid results in the formation of derivatives of 1,3-dialkyl-6,7-dicarboxy-5,6,7,8-tetrahydro-2-benzopy

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91906-35-3