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89149-56-4

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89149-56-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89149-56-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,1,4 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 89149-56:
(7*8)+(6*9)+(5*1)+(4*4)+(3*9)+(2*5)+(1*6)=174
174 % 10 = 4
So 89149-56-4 is a valid CAS Registry Number.

89149-56-4Relevant articles and documents

OXIDATION OF N-ALKYL-N'-TOSYLHYDRAZINES WITH BROMINE

Palmieri, Gianni

, p. 4097 - 4102 (2007/10/02)

Oxidation of N-alkyl-N'-tosylhydrazines with bromine yield alkyl bromides, vicinal alkyl dibromides and traces of alcohols.The main products of primary hydrazines are monobromides whereas secondary hydrazines preferably produce dibromides.The reaction proceeds with evolution of nitrogen and hydrobromic acid and by the formation of intermediate sulfinic ester wich may be isolated.Various substrates were examined under different conditions to confirm the validity of the reaction mechanism hypothesized.

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