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72725-72-5

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72725-72-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 72725-72-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,7,2 and 5 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 72725-72:
(7*7)+(6*2)+(5*7)+(4*2)+(3*5)+(2*7)+(1*2)=135
135 % 10 = 5
So 72725-72-5 is a valid CAS Registry Number.

72725-72-5Relevant articles and documents

Studies on the Thermolysis of 2-(2-Hydroxy-2-arylethyl)pyrazines. An Example of a Retro-Ene-Type Reaction

Houminer, Yoram

, p. 999 - 1003 (2007/10/02)

Several substituted 2-(2-hydroxy-2-arylethyl)pyrazines (1-10) have been prepared and their thermolysis in diglyme and DMF studied.Each of these substrates decomposes to give the parent methylpyrazine and the corresponding aryl aldehyde.Kinetic, isotope effect, and solvent effect studies suggest a mechanism involving a nonpolar concerted six-membered-ring transition state.The degree of proton transfer in the transition state is discussed in detail.Methyl substituents on the pyrazine ring were found to strongly affect the reaction rate.This phenomenon is analyzed interms of the steric and electronic effects induced by the methyl substituents.

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