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841-83-8

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841-83-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 841-83-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 841-83:
(5*8)+(4*4)+(3*1)+(2*8)+(1*3)=78
78 % 10 = 8
So 841-83-8 is a valid CAS Registry Number.

841-83-8Downstream Products

841-83-8Relevant articles and documents

Acid-catalyzed Ethanolysis of Di-1-azulenyl Ketones

Saitoh, Masaki,Hashimoto, Keitaro,Nakazawa, Tomoo,Sugihara, Yoshikazu

, p. 3563 - 3566 (1993)

Substituted di-1-azulenyl ketones composed of 3,8-dimethyl-5-isopropyl-1-azulenyl and/or 4,6,8-trimethyl-1-azulenyl group were refluxed in ethanol in the presence of p-toluenesulfonic acid to give substituted azulenes and ethyl azulene-1-carboxylates derived from the cleavage of either of C-CO bonds of di-1-azulenyl ketones.The facility and the product distributions of the ethanolysis were affected markedly by the substitutents.

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