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83191-20-2

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83191-20-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83191-20-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,1,9 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 83191-20:
(7*8)+(6*3)+(5*1)+(4*9)+(3*1)+(2*2)+(1*0)=122
122 % 10 = 2
So 83191-20-2 is a valid CAS Registry Number.

83191-20-2Relevant articles and documents

Hydrolysis of N-(2,2,2-trichloroethyl)arenesulfonamides

Rozentsveig,Levkovskaya,Mirskova,Kashik

, p. 1760 - 1764 (2007/10/03)

The direction of alkaline hydrolysis of N-(2,2,2-trichloro-1-R-ethyl)arenesulfonamides depends on the R substituent in the α-position with respect to the nitrogen atom. Substituents R having an n-donor heteroatom X promote cleavage of the C-N and C-X bonds to release the corresponding sulfonamide. Alkaline hydrolysis of N-(1-aryl-2,2,2-trichloroethyl)arenesulfonamides occurs chemoselectively at the trichloromethyl group. This reaction can be regarded as a preparative route to N-arylsulfonyl-α-arylglycines.

REACTIONS OF β,β-DICHLOROVINYL ACETATE WITH N,N-DICHLOROARENESULFAMIDINES

Mirskova, A. N.,Drozdova, T. I.,Levkovskaya, G. G.,Kalikhman, I. D.,Voronkov, M. G.

, p. 1263 - 1266 (2007/10/02)

N-Chloro-N-(2,2,2-trichloro-1-acetoxyethyl)arenesulfonamides are formed with high yields in the reaction of β,β-dichlorovinyl acetate with N,N-dichloroarenesulfamidines.They readily exchange the acetoxy group for alkoxy, alkylthio, and alkylamino groups (

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