849340-92-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 849340-92-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,9,3,4 and 0 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 849340-92:
(8*8)+(7*4)+(6*9)+(5*3)+(4*4)+(3*0)+(2*9)+(1*2)=197
197 % 10 = 7
So 849340-92-7 is a valid CAS Registry Number.
849340-92-7Relevant articles and documents
A synthetic route to pyridazino[4,5-b]-1,8-naphthyridines, a new tetraazaheterocyclic system
Vilar, Juan,Peinador, Carlos,Quintela, Jose Ma
, p. 329 - 336 (2005)
A synthesis of the substituted pyridazino[4,5-b]-1,8-naphthyridin-6(7H)-ones (6) based on the reaction of ethyl 2-(dibromomethyl)-6-cyano-7-ethoxy-5-phenyl-1,8-naphthyridine-3-carboxyl ate (3) with hydrazone or substituted hydrazones is described.
