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91954-52-8

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91954-52-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91954-52-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,9,5 and 4 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 91954-52:
(7*9)+(6*1)+(5*9)+(4*5)+(3*4)+(2*5)+(1*2)=158
158 % 10 = 8
So 91954-52-8 is a valid CAS Registry Number.

91954-52-8Relevant articles and documents

Synthesis of some new pyrazole and pyrazolopyrimidine derivatives [1]

Ghozlan, Said A. S.,Abdelrazek, Fathy M.,Mohamed, Mona H.,Azmy, Khaled E.

experimental part, p. 1379 - 1385 (2011/02/23)

A series of pyrazolo [3,4-d] pyrimidine, pyrazolo [1,5-a] pyrimidine, and pyrazolyl triazoles have been prepared via reaction of ethyl 5-amino-3-phenylpyrazole-4-carboxylate with isothiocyanic esters, α,β-unsaturated nitriles, and some active methylene re

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