637040-32-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 637040-32-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,0,4 and 0 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 637040-32:
(8*6)+(7*3)+(6*7)+(5*0)+(4*4)+(3*0)+(2*3)+(1*2)=135
135 % 10 = 5
So 637040-32-5 is a valid CAS Registry Number.
637040-32-5Relevant academic research and scientific papers
Synthesis of 2-alkenyl-1-pyrrolin-1-oxides and polysubstituted nitrones
Sar, Cecilia,Jeko, Jozsef,Hideg, Kalman
, p. 1367 - 1372 (2007/10/03)
A new approach for the synthesis of α-hydroxy nitroxide ester 4 by oxidation of the sterically hindered amine 3 is described. The reaction of 2-methyl-1-pyrrolin-1-oxides 1 and 7 with aldehydes 5a-j gave 2-alkenyl nitrones, which could be convened to high
