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159983-62-7

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159983-62-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159983-62-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,9,8 and 3 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 159983-62:
(8*1)+(7*5)+(6*9)+(5*9)+(4*8)+(3*3)+(2*6)+(1*2)=197
197 % 10 = 7
So 159983-62-7 is a valid CAS Registry Number.

159983-62-7Relevant articles and documents

Some Reactions of 3,6-Bis(arylsulfonylimino)-1,2,4,4,5,5-hexachlorocyclohexenes

Avdeenko, A. P.,Yusina, A. L.

, p. 696 - 699 (2007/10/03)

Reduction of 3,6-bis(arylsulfonylimino)-1,2,4,4,5,5-hexachlorocyclohexenes with Zn in CH3COOH or Na2S2O4 results in elimination of two chlorine atoms to give a benzoid structure.A similar effect is produced by dialkyl hydrogen phosphites.Reactions of the title compounds with methanol and primary aromatic amines result in 1,2-addition.Treatment with secondary amines leads to nucleophilic substitution of chlorine at the sp2-hybridized carbon atom.Reactions with trimethylsilyl dialkyl phosphites proceed in two directions: elimination of two chlorine atoms and 1,6-addition followed by hydrolysis of the intermediate adduct.

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