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77455-65-3

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77455-65-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77455-65-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,4,5 and 5 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 77455-65:
(7*7)+(6*7)+(5*4)+(4*5)+(3*5)+(2*6)+(1*5)=163
163 % 10 = 3
So 77455-65-3 is a valid CAS Registry Number.

77455-65-3Relevant articles and documents

Evaluation of electrophilic activities of substituted nitroarenes in the VNS reaction with secondary and tertiary carbanions

Blazej,Wilenska,Voynova,Makosza

, p. 2017 - 2030 (2008/12/23)

Relative electrophilic activities of substituted nitroarenes in the vicarious nucleophilic substitution (VNS) reaction with carbanion of chloromethylp-chlorophenyl and bromomethyl phenyl sulfones, 1 and 2, were determined via competitive experiments. The results are in good agreement with relative activities determined earlier in the competitive experiments with carbanion of chloromethyl phenyl sulfone 3 confirming reliability of these data. On the other hand, analogous competitive experiments with tertiary carbanions of chloroform and 1-chloroethyl phenyl sulfone gave results much affected by steric effects thus the VNS reaction with these carbanions cannot be used for evaluation of electrophilic activities of nitroarenes.

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