216321-33-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 216321-33-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,6,3,2 and 1 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 216321-33:
(8*2)+(7*1)+(6*6)+(5*3)+(4*2)+(3*1)+(2*3)+(1*3)=94
94 % 10 = 4
So 216321-33-4 is a valid CAS Registry Number.
216321-33-4Relevant academic research and scientific papers
Transformations of 1,2,4-Triazines in Reactions with Nucleophiles: II. Regioselectivity of Amination of 1,2,4-Triazine 4-Oxides
Chupakhin,Kozhevnikov,Kozhevnikov,Rusinov
, p. 388 - 392 (2007/10/03)
Direct amination of 1,2,4-triazine 4-oxides at the 3-position is described for the first time. A new mode of stabilization of σH adducts through ring-chain equilibria has been revealed.
