77502-27-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77502-27-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,0 and 2 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77502-27:
(7*7)+(6*7)+(5*5)+(4*0)+(3*2)+(2*2)+(1*7)=133
133 % 10 = 3
So 77502-27-3 is a valid CAS Registry Number.
InChI:InChI=1/C28H26N4O2/c1-19-7-3-5-9-23(19)27(33)31-25(21-11-15-29-16-12-21)26(22-13-17-30-18-14-22)32-28(34)24-10-6-4-8-20(24)2/h3-18,25-26H,1-2H3,(H,31,33)(H,32,34)
77502-27-3Relevant articles and documents
Reaction of N-(4-Pyridylmethyl)benzamide N-oxides with Ethyl Cyanoacetate in the Presence of Acetic Anhydride
Brana, Miguel F.,Rodriguez, Maria L. Lopez,Rodriguez, Concepcion,Garrido-Pertierra, Amando
, p. 1019 - 1022 (2007/10/02)
Reaction of N-(4-pyridylmethyl)benzamide N-oxides 2a-f with ethyl cyanoacetate in the presence of acetic anhydride yield dimerization compounds 3a-f and (E)-ethyl 2-cyano-3-(4-pyridyl)-3-(benzoylamino)acrylates 4a-f, which react with hydrazine to give 4-cyano-3-(4-pyridyl)-3-pyrazolin-5-one 9 and the corresponding benzamides 10a-f.