128259-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128259-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,5 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128259-57:
(8*1)+(7*2)+(6*8)+(5*2)+(4*5)+(3*9)+(2*5)+(1*7)=144
144 % 10 = 4
So 128259-57-4 is a valid CAS Registry Number.
128259-57-4Relevant articles and documents
Synthesis of Quinolines via Cyclization of 2-Cyano-3-dimethylamino-N-(aryl)acrylamides
Adams, David R.,Adams, Chitra
, p. 469 - 475 (2007/10/02)
A simple synthesis of 2-cyano-3-dimethylamino-N-(aryl)-acrylamides and their subsequent conversion to 2-chloro-3-cyanoquinolines is presented.