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159690-31-0

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159690-31-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159690-31-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,6,9 and 0 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 159690-31:
(8*1)+(7*5)+(6*9)+(5*6)+(4*9)+(3*0)+(2*3)+(1*1)=170
170 % 10 = 0
So 159690-31-0 is a valid CAS Registry Number.

159690-31-0Relevant articles and documents

A Convenient Conversion of Primary Amines into the Corresponding Halides Radical Promoted Halodeamination via N-Substituted-N-Tosylhydrazines

Collazo, Luis R.,Guziec, Frank S.,Hu, Wei-Xiao Jr.,Pankayatselvan, Ratnadevi

, p. 7911 - 7914 (2007/10/02)

Treatment of 1-substituted-1-tosylhydrazines with 2 equivalents of NCS or NBS in dry THF in presence of light affords the corresponding alkyl halides in good yields.This reaction presumably involves the initial formation of a stabilized hydrazyl radical which is halogenated in a radical chain process.Elimination of p-toluenesulfinic acid and extrusion of nitrogen leads to the corresponding alkyl halide.This route provides an improved method for halodeamination under neutral reaction conditions.

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