109107-20-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109107-20-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,1,0 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 109107-20:
(8*1)+(7*0)+(6*9)+(5*1)+(4*0)+(3*7)+(2*2)+(1*0)=92
92 % 10 = 2
So 109107-20-2 is a valid CAS Registry Number.
109107-20-2Relevant articles and documents
SYNTHESE ET HETEROCYCLISATION DES (PYRAZOLYL-3(5))-2 BENZIMIDAZOLES EN CATALYSE PAR TRANSFERT DE PHASE
Essassi, E.M.,Fifani, J.
, p. 63 - 68 (2007/10/02)
Fusion of o-diamines with pyrazolylhydrazines 2a-2b gives the new 2-pyrazolylbenzimidazoles 3a-3l.The application of phase transfer catalysis to the N-alkylation of compounds 3a-3d leads to pyrazines 4a-4d and diazepines 5a-5d.