434937-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 434937-20-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,4,9,3 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 434937-20:
(8*4)+(7*3)+(6*4)+(5*9)+(4*3)+(3*7)+(2*2)+(1*0)=159
159 % 10 = 9
So 434937-20-9 is a valid CAS Registry Number.
434937-20-9Relevant articles and documents
Ring cleavage of dicyano-substituted benzimidazoles by Dibal
Boykin, David W.,Goeker, Hakan
, p. 529 - 534 (2007/10/03)
Ring cleavage of 1-butyl-2-(4-cyanophenyl)-1H-benzimidazole-5-carbonitrile (5) and 1-benzyl-2-(4-cyanophenyl)-1H-benzimidazole-5-carbonitrile (6) using diisobutylaluminum hydride is reported.