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279687-88-6

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279687-88-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 279687-88-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,9,6,8 and 7 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 279687-88:
(8*2)+(7*7)+(6*9)+(5*6)+(4*8)+(3*7)+(2*8)+(1*8)=226
226 % 10 = 6
So 279687-88-6 is a valid CAS Registry Number.

279687-88-6Downstream Products

279687-88-6Relevant articles and documents

Synthesis of Benzo[b]imidazo[1,5-d][1,5]-thiazepines. Derivatives of a Novel Ring System

Petrova,Petrov,Antonova,Kalcheva

, p. 4355 - 4366 (2003)

Derivatives of a novel tricyclic system having a 1,5-benzothiazepine skeleton are described. A method for synthesis of the title compounds 5, consisted of an intramolecular cyclization of 1-(2-carboxymethylthiophenyl)-2H-imidazol-2-ones 4 in PPA, is presented. Compounds 4 were prepared by a reaction of 1-(2-mercaptophenyl)-2H-imidazol-2-ones 3 with chloroacetic acid. 2H-Imidazolones 3 were obtained by a ring transformation of substituted 2(3H)-benzothiazolones 2 in reactions with primary amines. The method is convenient because of its simplicity and good yields.

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