27188-21-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 27188-21-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,1,8 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 27188-21:
(7*2)+(6*7)+(5*1)+(4*8)+(3*8)+(2*2)+(1*1)=122
122 % 10 = 2
So 27188-21-2 is a valid CAS Registry Number.
27188-21-2Relevant articles and documents
New Routes to Selectively Methylated Benzimidazoles
Katritzky, Alan R.,Rachwal, Stanislaw,Ollmann, Richard
, p. 775 - 780 (2007/10/02)
The use of intermediate benzotriazol-1-yl derivatives simplified the procedures for the preparation of 5-methoxy-1-methylbenzimidazole and 6-methoxy-1-methylbenzimidazole starting from 4-methoxy-2-nitroaniline.This strategy represents a novel and potentia