21877-70-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21877-70-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,7 and 7 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 21877-70:
(7*2)+(6*1)+(5*8)+(4*7)+(3*7)+(2*7)+(1*0)=123
123 % 10 = 3
So 21877-70-3 is a valid CAS Registry Number.
21877-70-3Relevant academic research and scientific papers
THERMOLYSIS OF 4-AZIDOPYRIMIDINES AND 4-AZIDOQUINAZOLINES
Giammanco, Lorenzo,Invidiata, Francesco Paolo
, p. 1459 - 1464 (2007/10/02)
A facile thermolysis of 4-azidopyrimidines and 4-azidoquinazolines leading, by ring contraction, in excellent yields to 1-cyanoimidazoles and benzimidazoles is reported.
