91489-21-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91489-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,4,8 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 91489-21:
(7*9)+(6*1)+(5*4)+(4*8)+(3*9)+(2*2)+(1*1)=153
153 % 10 = 3
So 91489-21-3 is a valid CAS Registry Number.
91489-21-3Relevant academic research and scientific papers
REACTION OF THIOPHENE WITH TRICHLOROETHYLIDENEARENESULFONAMIDES
Gogoberidze, I. T.,Levkovskaya, G. G.,Mirskova, A. N.,Voronkov. M. G.
, p. 1001 - 1002 (2007/10/02)
Trichloroethylidenearenesulfonamides react with thiophene in the presence of boron trifluoride etherate as catalyst, forming the previously unknown 1,1,1-tichloro-2-(2-thienyl)-2-arenesulfonamidoethanes.
