91658-83-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91658-83-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,5 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91658-83:
(7*9)+(6*1)+(5*6)+(4*5)+(3*8)+(2*8)+(1*3)=162
162 % 10 = 2
So 91658-83-2 is a valid CAS Registry Number.
91658-83-2Relevant articles and documents
REACTION OF o-PHENYLENEDIAMINE WITH ISATINS
Ivashchenko, A. V.,Drushlyak, A. G.,Titov, V. V.
, p. 537 - 542 (2007/10/02)
It is shown that the reaction of o-phenylenediamine with isatins in the general case leads to mixtures of indoloquinoxalines, 3-(2'-aminophenyl)-2(1H)-quinoxalinones, and spiro.Spiro2H-benzimidazole-2,3'-in
