91020-82-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91020-82-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,0,2 and 0 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 91020-82:
(7*9)+(6*1)+(5*0)+(4*2)+(3*0)+(2*8)+(1*2)=95
95 % 10 = 5
So 91020-82-5 is a valid CAS Registry Number.
91020-82-5Relevant articles and documents
Quinazoline Derivatives from 2-Phenyl-4-quinazolinylhydrazine
El-Sherief, Hassan Ahmed,Mahmoud, Abdalla Mohamed,Esmaiel, Ahmed Ahmed
, p. 1138 - 1142 (2007/10/02)
Formic acid and acetyl and benzoyl chloride were treated with 2-phenyl-4-quinazolinylhydrazine (1) under mild conditions to afford the corresponding hydrazides which were converted into 5-phenyltriazoloquinazoline, 2-methyl-5-phenyltr