177937-80-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 177937-80-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,9,3 and 7 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 177937-80:
(8*1)+(7*7)+(6*7)+(5*9)+(4*3)+(3*7)+(2*8)+(1*0)=193
193 % 10 = 3
So 177937-80-3 is a valid CAS Registry Number.
177937-80-3Relevant articles and documents
Synthesis and biological activity of some new pyran and pyridine derivatives
Hataba
, p. 41 - 44 (2007/10/03)
Cinnamonitriles Ia-c was reacted with propiophenone to give pyranes 2a,b and pyridone 7 respectively. Aminopyridine 4 was obtained from 2a and transformed into pyridopyrimidines 6a,b. Chlorination and acetylation of 7 was also reported.
