A Stability-Indicating High Performance Liquid Chromatographic Assay for the Simultaneous Determination of Pyridoxine, Ethionamide, and Moxifloxacin in Fixed Dose Combination Tablets

<table>HPLC chromatograms comparison representing the effect of oxidative degradation on the developed stability indicating method. (A) Untreated standard solution containing (1) pyridoxine, (2) I.S. (ciprofloxacin), (3) ethionamide, and (4) moxifloxacin (30% H<sub>2</sub>O<sub>2</sub> for 72 hours) and moxifloxacin. (B) Pyridoxine (30% H<sub>2</sub>O<sub>2</sub> for 72 hours). (C) Ethionamide (3% H<sub>2</sub>O<sub>2</sub> for 2 hours). (D) Moxifloxacin (30% H<sub>2</sub>O<sub>2</sub> for 72 hours).</table>

Chromatography Research International

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Figure 2

Figure 2: A Stability-Indicating High Performance Liquid Chromatographic Assay for the Simultaneous Determination of Pyridoxine, Ethionamide, and Moxifloxacin in Fixed Dose Combination Tablets 

Figure 2 | A Stability-Indicating High Performance Liquid Chromatographic Assay for the Simultaneous Determination of Pyridoxine, Ethionamide, and Moxifloxacin in Fixed Dose Combination Tablets 