139435-52-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139435-52-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,4,3 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 139435-52:
(8*1)+(7*3)+(6*9)+(5*4)+(4*3)+(3*5)+(2*5)+(1*2)=142
142 % 10 = 2
So 139435-52-2 is a valid CAS Registry Number.
139435-52-2Relevant academic research and scientific papers
SULFONYL CHALCONES
Cremlyn, Richard J.,Swinbourne, Frederick J.,Bassin, Paul,Dane, David,Higgins, Karen,et al.
, p. 385 - 396 (2007/10/02)
The chalcones (1-10) have been reacted with chlorosulfonic acid to give the corresponding sulfonyl chlorides (1a-10a) (TableI). 3-Methoxychalcone (3) also gave the disulfonyl chloride.The sulfonyl chlorides were reacted with amines and hydrazine to give 4
