RP-HPLC study of the degradation of diclofenac and piroxicam in the presence of hydroxyl radicals

被引：34

作者：

Gaudiano, MC ^{[1
]}

Valvo, L ^{[1
]}

Bertocchi, P ^{[1
]}

Manna, L ^{[1
]}

机构：

[1] Ist Super Sanita, Lab Chim Farmaco, I-00161 Rome, Italy

来源：

JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS | 2003年 / 32卷 / 01期

关键词：

degradation; oxidation; drugs; hydroxyl radicals; diclofenac; piroxicam; RP-HPLC;

D O I：

10.1016/S0731-7085(03)00058-X

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学]; 081704 [应用化学];

摘要：

The effect of hydroxyl radical attack on two non-steroidal anti-inflammatory drugs (NSAIDs) was studied in vitro. Diclofenac and piroxicam were analysed by RP-HPLC after reaction with OH. free radicals to detect newly formed oxidation and/or degradation products. OH. free radicals were obtained by means of ferrous sulphate and ascorbic acid mixtures. During the reaction the mixtures were exposed to irradiation by a tungsten lamp to obtain an increased and more reproducible formation of hydroxyl radicals. The chromatographic profiles showed the formation of several new peaks for both diclofenac and piroxicam due to the presence of a number of degradation/oxidation products formed in the presence of OH. radicals. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：151 / 158

页数：8

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