33491-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 33491-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,4,9 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 33491-21:
(7*3)+(6*3)+(5*4)+(4*9)+(3*1)+(2*2)+(1*1)=103
103 % 10 = 3
So 33491-21-3 is a valid CAS Registry Number.
33491-21-3Relevant academic research and scientific papers
REACTIONS OF HYDRAZIDIC HYDRAZINES WITH 1,3-DICARBONYL COMPOUNDS
Plenkiewicz, Jan,Zdrojewski, Tadeusz
, p. 1411 - 1422 (2007/10/02)
The reactions of hydrazidic hydrazines (3) with acetylacetone, benzoylacetone, 3-methylacetylacetone, and ethyl acetylacetate were investigated.Basing on 1H and 13C NMR spectra, the structures of products were proposed.