157946-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157946-20-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,9,4 and 6 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 157946-20:
(8*1)+(7*5)+(6*7)+(5*9)+(4*4)+(3*6)+(2*2)+(1*0)=168
168 % 10 = 8
So 157946-20-8 is a valid CAS Registry Number.
157946-20-8Relevant articles and documents
Reactions of cyanomethylbenzimidazoles. Part II. Reaction of cyanomethylbenzimidazoles with aldehydes methylketones and nitroso compounds.
Sawlewicz,Milczarska,Manowska
, p. 187 - 201 (2007/10/09)
Position of CH2CN group in the benzimidazole system determines the activity of hydrogen atoms of CH2 group in condensation reactions. Some of the obtained compounds show high tuberculostatic activity.
