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81637-90-3

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81637-90-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81637-90-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,3 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81637-90:
(7*8)+(6*1)+(5*6)+(4*3)+(3*7)+(2*9)+(1*0)=143
143 % 10 = 3
So 81637-90-3 is a valid CAS Registry Number.

81637-90-3Downstream Products

81637-90-3Relevant articles and documents

REACTION OF N,N-DICHLOROAMIDES WITH TRICHLOROETHYLENE

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

, p. 239 - 241 (2007/10/02)

The reaction of N,N-dichloroacetamide and N,N-dichlorobenzamide with trichloroethylene in an inert atmosphere leads to the formation of the products from the transformation of the corresponding acylimines of chloral, i.e. 2,2,2-trichloro-1,1-di(acetamido)benzamido ethanes, N-(2,2,2-trichloro-1-hydroxyethyl)acetamides and the corresponding benzamides, and pentachloroethane.In the reaction of N,N-dichlorobenzamide with trichloroethylene in the presence of atmospheric oxygen N-(dichloroacetyl)benzamide is obtained in additon to N-(2,2,2-trichloro-1-hydroxyethyl)benzamide and pentachloroethane.Its formation results from the parallel processes of oxidation of the trichloroethylene to dichloroacetyl chloride and reduction of the dichlorobenzamide to benzamide and their reaction.

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