518987-38-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 518987-38-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,8,9,8 and 7 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 518987-38:
(8*5)+(7*1)+(6*8)+(5*9)+(4*8)+(3*7)+(2*3)+(1*8)=207
207 % 10 = 7
So 518987-38-7 is a valid CAS Registry Number.
518987-38-7Relevant 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.
