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75996-92-8

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75996-92-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75996-92-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,9,9 and 6 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 75996-92:
(7*7)+(6*5)+(5*9)+(4*9)+(3*6)+(2*9)+(1*2)=198
198 % 10 = 8
So 75996-92-8 is a valid CAS Registry Number.

75996-92-8Downstream Products

75996-92-8Relevant articles and documents

Reactions of 4,5-Dihydro-5-methylpyranoindole-1,3-dione; a Synthesis of N-Methylisotryptophol

Bahadur, Gulam A.,Baylei, A. Sydney,Middleton, Nigel W.,Peach, Josephine M.

, p. 1688 - 1692 (2007/10/02)

Boiling 4,5-dihydro-5-methylpyranoindole-1,3-dione (7) with alcohols followed by decarboxylation of the half-esters so formed leads to esters of 1-methylindol-2-ylacetic acid; reduction of these esters then affords N-methylisotryptophol (10).Reaction of 3-carboxy-1-methylindol-2-ylacetic acid (6; R=H) with acetic acid-sodium acetate gives 3,5-dimethylpyranoindol-1(5H)-one (17); with dimethylformamide-phosphorus oxychloride, 4-(NN-dimethylaminomethylene)-4,5-dihydro-5-methylpyranoindole-1,3-dione (22) was obtained.

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