140241-74-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 140241-74-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,2,4 and 1 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 140241-74:
(8*1)+(7*4)+(6*0)+(5*2)+(4*4)+(3*1)+(2*7)+(1*4)=83
83 % 10 = 3
So 140241-74-3 is a valid CAS Registry Number.
140241-74-3Relevant articles and documents
Cross-dehydrogenative coupling between enamino esters and ketones: Synthesis of tetrasubstituted pyrroles
Zhao, Miao,Wang, Fen,Li, Xingwei
, p. 1412 - 1415 (2012/05/04)
Tetrasubstituted pyrroles have been synthesized via the cross-dehydrogenative coupling between enamino esters and acetone. Silver carbonate proved to be an effective oxidant, and no transition metal catalyst is necessary.
