898518-80-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 898518-80-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,9,8,5,1 and 8 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 898518-80:
(8*8)+(7*9)+(6*8)+(5*5)+(4*1)+(3*8)+(2*8)+(1*0)=244
244 % 10 = 4
So 898518-80-4 is a valid CAS Registry Number.
898518-80-4Relevant articles and documents
Facile approach to the synthesis of substituted thieno[2,3-d]pyrimidin-4- ones
Hovhannisyan, Anna,Aristakesyan, Lilit,Melikyan, Gagik
, p. 253 - 256 (2013/05/09)
Condensation of Gewald's thiophenes substituted with a dimethylaminomethyleneamino group at position 2 with primary amines yields 5/6-aryl-thieno[2,3-d] pyrimidin-4-ones with variable substituents at the N3 position.