133657-08-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133657-08-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,6,5 and 7 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 133657-08:
(8*1)+(7*3)+(6*3)+(5*6)+(4*5)+(3*7)+(2*0)+(1*8)=126
126 % 10 = 6
So 133657-08-6 is a valid CAS Registry Number.
133657-08-6Relevant articles and documents
SYNTHESIS OF 1,4,5-TRISUBSTITUTED IMIDAZOLES
Katritzky, Alan R.,Jiang, Jinlong,Harris, Philip A.,Steel, Peter J.
, p. 2187 - 2194 (2007/10/02)
1-Substituted 4,5-diarylimidazoles are prepared in high yields by the reaction of 1-(benzotriazol-1-yl)-N-triphenylphosphorylidenemethylamine with primary amines and the treatment of the resulting intermediate with α-diaryl ketones.
