83549-13-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83549-13-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,5,4 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 83549-13:
(7*8)+(6*3)+(5*5)+(4*4)+(3*9)+(2*1)+(1*3)=147
147 % 10 = 7
So 83549-13-7 is a valid CAS Registry Number.
83549-13-7Relevant articles and documents
Attempted Synthesis of Pyrazinobenzimidazoles
Gakhar, H. K.,Crank, G.,Cole, E. R.
, p. 699 - 700 (2007/10/02)
Condensation of 2-(ethylaminomethyl)benzimidazole (I) with various α-haloacetophenones (II) results in the formation of 4-aryl-2-ethyl-4-hydroxy-3,4-dihydropyrazinobenzimidazoles (IV) which on treatment with PPA give substituted benzoic acids (VI).
