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81114-23-0

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81114-23-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81114-23-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,1,1 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81114-23:
(7*8)+(6*1)+(5*1)+(4*1)+(3*4)+(2*2)+(1*3)=90
90 % 10 = 0
So 81114-23-0 is a valid CAS Registry Number.

81114-23-0Relevant articles and documents

Synthesis of Selenium-containing para-Phenylenediamines: Novel Antidegradants for Natural Rubber

Parr, William J. E.

, p. 3002 - 3007 (1981)

The synthesis of novel N,N'-substituted para-phenylenediamines bearing side-chains containing one or two monoselenide linkages is described.Reductive alkylation of para-phenylenediamines with oxoselenides using sodium cyanoborohydride in methanol gives good to high yields of these compounds.Compounds containing one selenide linkage react with 3 mol equivalents of ozone, and those containing two selenide linkages react with 4 mol equivalents of ozone, compared to only 2 mol equivalents of ozone in the case of N-isopropyl-N'-phenyl-p-phenylenediamine.Synthetic routes to the oxoselenides required as precursors are described.

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