679838-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 679838-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,9,8,3 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 679838-57:
(8*6)+(7*7)+(6*9)+(5*8)+(4*3)+(3*8)+(2*5)+(1*7)=244
244 % 10 = 4
So 679838-57-4 is a valid CAS Registry Number.
679838-57-4Relevant academic research and scientific papers
Synthesis of biologically active 5-benzopyranylpyridines and triazolopyridines
Mulwad,Pawar, Rupesh B.
, p. 2901 - 2904 (2007/10/03)
The chalcones of 4-hydroxycoumarins 1a-h on treatment with malononitrile in the presence of ammonium acetate in alcohol give 2-amino-4-aryl-3-cyano-6-[2H-4-hydroxy-2-oxo-[1]benzopyran-3-yl] pyridines 2a-h which on treatment with acetonitrile in the presen
