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116672-34-5

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116672-34-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 116672-34-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,6,6,7 and 2 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 116672-34:
(8*1)+(7*1)+(6*6)+(5*6)+(4*7)+(3*2)+(2*3)+(1*4)=125
125 % 10 = 5
So 116672-34-5 is a valid CAS Registry Number.

116672-34-5Downstream Products

116672-34-5Relevant articles and documents

A Spectrophotometric Study of the Tautomeric Monoanions of (Z)-5-Arylmethylenehydantoins

Tan, Sau-Fun,Ang, Kok-Peng,How, Gee-Fung,Jayachandran, Harilakshmi

, p. 499 - 502 (2007/10/02)

First ionization of (Z)-5-arylmethylenehydantoins in aqueous dimethyl sulphoxide yields a tautomeric mixture of monoanions by deprotonation at N-1 or N-3.By using appropriate 3-methyl and 1-methyl derivatives as models, the equilibrium proportions of the monoanions of the N-substituted compounds have been estimated from the electronic spectra.The percentage of the N-1 anion increases with electron-withdrawing substituents in the benzene ring and with increasing concentration of dimethyl sulphoxide in the solvent mixture.

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