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24919-63-9

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24919-63-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 24919-63-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,4,9,1 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 24919-63:
(7*2)+(6*4)+(5*9)+(4*1)+(3*9)+(2*6)+(1*3)=129
129 % 10 = 9
So 24919-63-9 is a valid CAS Registry Number.

24919-63-9Relevant articles and documents

An efficient synthesis of 1-acyl-3-arylimidazolidines catalyzed by montmorillonite K-10 clay under microwave irradiation

Caterina, Maria Cristina,Corona, Maria Veronica,Perillo, Isabel,Salerno, Alejandra

experimental part, p. 771 - 781 (2009/06/18)

The synthesis of 1-acyl-3-arylimidazolidines were performed by reaction of N-acyl-N'-arylethylenediamines with formaldehyde and Montmorillonite clay K-10 as a catalyst under microwave irradiation.

Kinetic Study on the Alkaline Hydrolysis of 1-Aryl-2-phenyl-2-imidazolines. Basicity-Rate of Hydrolysis and Structure Relationships

Fernandez, Beatriz M.,Reverdito, Ana M.,Lamdan, Samuel

, p. 933 - 937 (2007/10/02)

Rate constants (kobs) of hydrolysis in boiling alkaline ethanolic solution for six 1-aryl-2-phenyl-2-imidazolines were determined.The influence of substituents in the phenyl group at N-1 upon rate of hydrolysis was studied.When the imidazole ring is considered to be a substituent of the benzene ring at N-1, a good correlation with the Hammett equation is found.It was observed that reaction rates were enhanced by electron-releasing phenyl substituents of N-1 and reduced by electron-withdrawing groups, providing a change in the mechanism of the reaction in the firstcase that was not observed in the second.Agreement with the Hammett equation allowed comparison between experimental and "calculated" rate constants which are nearly equal.An equation relating the rate constants with the ionization constants of imidazolinium ions is given.

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