131424-04-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131424-04-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,4,2 and 4 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 131424-04:
(8*1)+(7*3)+(6*1)+(5*4)+(4*2)+(3*4)+(2*0)+(1*4)=79
79 % 10 = 9
So 131424-04-9 is a valid CAS Registry Number.
131424-04-9Relevant articles and documents
Versatile synthesis of 2-aryltriazolothiazolopyridines
Prasad, V S R,Sambaiah, T,Reddy, K Kondal
, p. 517 - 518 (2007/10/02)
The reaction of 2-aminothiazolopyridines (1) with benzonitrile in the presence of anhyd AlCl3 give N-(thiazolopyridin-2-yl)arylamidines (2) which on cyclodehydrogenation with lead tetraacetate in dry benzene afford 2-aryltriazolothiazolopyridines (4).