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For the determination of fluconazole (FLU) oxidation stability under permanganate treatment at the acidic pH, a sensitive, reproducible, and stability-indicating ultra-performance liquid chromatography–mass spectrometry (UPLC/MS) method was developed. Three additional products (tR = 5.79, 6.98, 7.54) were observed besides the FLU (tR = 6.22). The proposed method was used to study the kinetics of FLU oxidative degradation. An oxidation process followed kinetics of the second-order reaction. The degradation rate constant and the corresponding half-life obtained for the FLU oxidative degradation were 0.5626 h-1 and 16.69 h, respectively. The putative oxidation products were characterized and their fragmentation pathways, on a basis of MS/MS data, were proposed.
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19-27
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2019-02-28
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Publication order reference
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bwmeta1.element.doi-10_32383_appdr_93513