177280-03-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 177280-03-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,2,8 and 0 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 177280-03:
(8*1)+(7*7)+(6*7)+(5*2)+(4*8)+(3*0)+(2*0)+(1*3)=144
144 % 10 = 4
So 177280-03-4 is a valid CAS Registry Number.
177280-03-4Relevant articles and documents
A novel synthesis of imidazo [4,5-d] azepine Ring System
Waly,Said,Ayyad
, p. 296 - 301 (2007/10/03)
A novel synthesis of imidazo[4,5-d]azepine 5 from α-diketone is described. This is achieved either via acyloin condensation of the diester 3 followed by addition of trimethylsilylchloride or by condensation of the azepino-diketone 7 with S-methylisothiour
