20627-72-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20627-72-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,6,2 and 7 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 20627-72:
(7*2)+(6*0)+(5*6)+(4*2)+(3*7)+(2*7)+(1*2)=89
89 % 10 = 9
So 20627-72-9 is a valid CAS Registry Number.
20627-72-9Relevant academic research and scientific papers
Study of the Alkylation Reactions of Sulphol-3-enes
Chou, Ta-shue,Tso, Hsi-Hua,Chang, Lee-Jean
, p. 515 - 520 (2007/10/02)
Sulphol-3-ene can be deprotonated with sodium hydride in DMF to form the α-anion which reacts with various alkyl halides to give the 2-alkylsulpholenes.This approach provides a regiospecific preparation of disubstituted sulphol-3-enes and sulphol-2-enes.
