433971-49-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 433971-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,3,9,7 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 433971-49:
(8*4)+(7*3)+(6*3)+(5*9)+(4*7)+(3*1)+(2*4)+(1*9)=164
164 % 10 = 4
So 433971-49-4 is a valid CAS Registry Number.
433971-49-4Relevant academic research and scientific papers
Improved synthesis of 2-amino-1,2,4-triazolo[1,5-a]pyrimidines
Chernyshev,Sokolov,Taranushich
, p. 1134 - 1137 (2008/02/05)
An improved procedure is suggested for preparing 2-amino-1,2,4-triazolo[1, 5-a]pyrimidines from 3,5-diamino-1,2,4-triazole and unsaturated aromatic ketones, with acetyl protection of the amino group in the step of oxidation of 2-amino-4,7-dihydro-1,2,4-tr
