Abstract
A novel simple, selective and accurate spectrofluorimetric method has been developed for quantitation of azelaic acid (AZA) in bulk and cream dosage form. The proposed method depended on the reaction between dicarboxylic moiety of AZA and 9-chloromethylanthracence to produce fluorescent derivative that exhibited maximum fluorescence intensity at 413 nm after being excited at 365 nm. The numerous experimental parameters which affect the reaction product and stability have been carefully studied and optimized. The linearity of the calibration curve constructed has been 0.5–15 µg/ml (y = 26.864x + 31.793, r2 = 0.9999) with 0.143 and 0.434 µg/ml as LOD and LOQ values respectively. The method was used for quantitation of AZA in cream dosage form and the results showed that there was no interference from the cream excipients, the mean % recovery was 100.547% ± 0.775.
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