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135747-57-8

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135747-57-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135747-57-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,7,4 and 7 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 135747-57:
(8*1)+(7*3)+(6*5)+(5*7)+(4*4)+(3*7)+(2*5)+(1*7)=148
148 % 10 = 8
So 135747-57-8 is a valid CAS Registry Number.

135747-57-8Relevant articles and documents

Preparation of fused [1,3,5] benzotriazepines by a tandem aza wittig/carbodiimide-mediated annelation reaction

Molina, Pedro,Arques, Antonio,Alias, Asuncion

, p. 2979 - 2982 (1991)

AzaWittig type reaction of bis(iminophosphorane) 2, available from the diazide 1 and triphenylphosphine, with one mole of isothiocyanate leads to the iminophosphoranes 3 derived from the [1,2 ,4 ]triazolo[2,3-b] indazole ring, which by treatment with a se

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