137268-22-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137268-22-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,6 and 8 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 137268-22:
(8*1)+(7*3)+(6*7)+(5*2)+(4*6)+(3*8)+(2*2)+(1*2)=135
135 % 10 = 5
So 137268-22-5 is a valid CAS Registry Number.
137268-22-5Relevant academic research and scientific papers
Synthesis of N-substituted benzimidazole-2-thiones
Doerge,Cooray
, p. 1789 - 1795 (2007/10/02)
General methods were developed for N-substitution of benzimidazoline-2-thione with alkyl, alkenyl, alkynyl and acyl groups using S-tritylation as a protecting reaction.
