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89767-49-7

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89767-49-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89767-49-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,7,6 and 7 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 89767-49:
(7*8)+(6*9)+(5*7)+(4*6)+(3*7)+(2*4)+(1*9)=207
207 % 10 = 7
So 89767-49-7 is a valid CAS Registry Number.

89767-49-7Relevant articles and documents

Fischer Indolization and Its Related Compounds. XIX. Synthesis of Ethyl 4-Methoxy- and Ethyl 5-Methoxy-1-phenyl-3H-benzindole-2-carboxylates

Ishii, Hisashi,Murakami, Yasuoki,Watanabe, Toshiko,Suzuki, Hideharu,Maejima, Hideyuki

, p. 4401 - 4408 (2007/10/02)

Ethyl 4-methoxy- (7) and ethyl 5-methoxy- (3) -1-phenyl-3H-benzindole-2-carboxylates were prepared by Fischer indolization of ethyl phenylpyruvate 2-naphthylhydrazone derivatives bearing a methoxy group at the C3- (26) and the C4- (8) positions, respec

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