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81577-14-2

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81577-14-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81577-14-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,7 and 7 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 81577-14:
(7*8)+(6*1)+(5*5)+(4*7)+(3*7)+(2*1)+(1*4)=142
142 % 10 = 2
So 81577-14-2 is a valid CAS Registry Number.

81577-14-2Relevant articles and documents

MECHANISMS OF FREE-RADICAL REACTIONS. XIII. MECHANISM AND SELECTIVITY OF THE FREE-RADICAL HALOGENATION OF ALKYL AROMATIC HYDROCARBONS WITH FLUOROALKYL SUBSTITUENTS

Dneprovskii, A. S.,Eliseenkov, E. V.,Mil'tsov, S. A.

, p. 317 - 324 (2007/10/02)

The free-radical chlorination and bromination of 1-fluoro-2-arylethanes and 1,1,1-trifluoro-2-arylethanes was studied by the method of competing reactions.In all cases a good correalation between log krel and the Brown ?+ constants was observed.The variation of the selectivity in the transition from one reaction series to the other indicates that two independent factors which determine the reactivity (the change in the dissociation energy of the C-H bond and the polar effect of the substituents) have a simultaneous effect.

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