177272-50-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 177272-50-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,7,2,7 and 2 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 177272-50:
(8*1)+(7*7)+(6*7)+(5*2)+(4*7)+(3*2)+(2*5)+(1*0)=153
153 % 10 = 3
So 177272-50-3 is a valid CAS Registry Number.
177272-50-3Relevant articles and documents
Diels-Alder reaction of 1-phenylsulfonyl-3,3,3-trifluoropropyne with 1,3-dienes
Hu, Chang-Ming,Hong, Feng,Jiang, Biao,Xu, Yuanyao
, p. 215 - 218 (2007/10/02)
1-Phenylsulfonyl-3,3,3-trifluoropropyne, prepared in situ from 1-phenylsulfonyl-2-bromo-3,3,3-trifluoropropene and triethylamine, reacted with 1,3-dienes to give the cycloadducts and/or 2-trifluoromethyl phenylsulfone in good to excellent yield.
