Abstract
A high-performance liquid chromatography isocratic procedure was developed for the assay of cefetamet pivoxil hydrochloride in drug substance and powder for oral suspension. The method validation yielded good results and included the range, linearity, precision intra- inter-day, accuracy, specificity, LOD and LOQ values. The chromatographic system consisted of a C 18 absorbosphere column (150×4.6 mm i.d., 5 μm particle size), a mobile phase composed of water–acetonitrile–methanol–phosphate buffer, pH 3.5 (50:35:10:5, v/v), flow rate of 1.5 ml min −1 and UV detection at 254 nm. The relative standard deviation varied between 0.03 and 1.76%, and accuracy of 100.09% was found. Calibration curve was linear from 30.0–80.0 μg ml −1; its correlation coefficient was 0.99989.
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