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97231-89-5

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97231-89-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97231-89-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,2,3 and 1 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 97231-89:
(7*9)+(6*7)+(5*2)+(4*3)+(3*1)+(2*8)+(1*9)=155
155 % 10 = 5
So 97231-89-5 is a valid CAS Registry Number.

97231-89-5Relevant articles and documents

Three-electron S(N)2 reactions of arylcyclopropane cation radicals. 2. Steric and electronic effects of substitution

Dinnocenzo,Zuilhof,Lieberman,Simpson,McKechney

, p. 994 - 1004 (1997)

The nucleophilic substitution reactions on substituted arylcyclopropane cation radicals were studied by a combination of methods including product studies, time-resolved laser flash photolysis, kinetic isotope effects, and quantum chemical calculations. The reactions were found to proceed stereospecifically with inversion of configuration, with high regioselectivity for nucleophilic attack at the more substituted carbon atom, and with very small steric effects. Electronic effects on the nucleophilic substitution regiochemistry and the rate constants were found to be substantial for substituents on the cyclopropane moiety and on the aryl ring.

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