649757-61-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 649757-61-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,9,7,5 and 7 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 649757-61:
(8*6)+(7*4)+(6*9)+(5*7)+(4*5)+(3*7)+(2*6)+(1*1)=219
219 % 10 = 9
So 649757-61-9 is a valid CAS Registry Number.
649757-61-9Relevant academic research and scientific papers
Synthese d'amino-3 thiophenes a partir d'aryl- et d'hetaryl-acetonitrile (1)
Kirsch, G.,Cagniat, D.,Cagniat, P.
, p. 443 - 445 (2007/10/02)
Applying Fiesselman's condensation to α-hydroxymethylene nitriles the authors describe a synthesis of substituted aminothiophenes.
