Investigation and Analytical Applications of the Reaction of N1-methylnicotinamide and Active Methylene Containing Drugs

(E-pub Ahead of Print)

Author(s): Heba A. Elsebaie, Mervat H. Elhamamsy, Khaled M. Elokely*, Mohammed A. Eldawy

Journal Name: Current Pharmaceutical Analysis


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Abstract:

Background: The reaction between N1-methylnicotinamide iodide (NMNI) and the active methylene group containing compounds yields a fluorescent product, which can be used in the quantitative determination of certain drugs.

Objective: The objective is to develop, adapt and validate a simple spectrofluorometric method for the quantitative analysis of modafinil 1, budesonide 2, allicin 3 and florfenicol 4.

Methods: Spectral analysis (elemental analysis, 1H, 13C NMR, MS), computational methods (geometry optimization, Gibbs free energy and pKa calculations) and spectrofluorometric approaches were conducted.

Results: A C4 cyclization pathway was confirmed for the formation of the fluorophore. The spectrofluorometric method showed good linearity (R2= 0.996-0.999) over concentrations of 1-50 ng/mL, 0.5-5 ng/mL, 60-150 pg/mL, and 1-15 ng/mL of the standard solutions of 1, 2, 3, and 4, respectively.

Conclusion: The proposed method is simple and suitable for quality control and assurance studies

Keywords: Spectrofluorometric analysis; modafinil; budesonide, allicin; florfenicol; free energy calculations.

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Article Details

(E-pub Ahead of Print)
DOI: 10.2174/1573412917999200922131030
Price: $95