717118-14-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 717118-14-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,1,7,1,1 and 8 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 717118-14:
(8*7)+(7*1)+(6*7)+(5*1)+(4*1)+(3*8)+(2*1)+(1*4)=144
144 % 10 = 4
So 717118-14-4 is a valid CAS Registry Number.
717118-14-4Relevant articles and documents
Positional isomers of thienopyrimidinones
Kucherenko,Zadorozhny,Kovtunenko
, p. 750 - 758 (2008)
Condensation of o-cyanomethylbenzoic acids with esters of 2-aminothiophene-3-carboxylic and 3-amino-thiophene-2-carboxylic acids to give isomeric 2-(4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-ylmethyl)-benzoic acids and their ethyl and phenacyl esters. Met