21323-77-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21323-77-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,3,2 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 21323-77:
(7*2)+(6*1)+(5*3)+(4*2)+(3*3)+(2*7)+(1*7)=73
73 % 10 = 3
So 21323-77-3 is a valid CAS Registry Number.
21323-77-3Relevant articles and documents
v-Triazolopyrimidines (8-Azapurines). Part 24. The 3-Alkyl Derivatives
Albert, Adrion
, p. 2344 - 2351 (2007/10/02)
4-Methylamino-1,2,3-triazole-5-carboxamide (2e) and its 3-benzyl derivative (2b) were cyclized with hydrochloric acid and triethyl orthoformate to give 3-methyl-8-azapurin-6(1H)-one (1c) and its 9-benzyl derivative (1b).The reaction mechanism is discussed