Abstract
A simple, precise, accurate, and rapid reverse phase-high performance liquid chromatography (RP-HPLC) method with UV-Visible detector has been developed and subsequently validated for the simultaneous determination of amlodipine besylate(AML) and celecoxib(CEL) in their combined tablet dosage form. The separation was based on the use of a Flowrosil C18 analytical column (250 × 4.6 mm, i.d., 5 µm). The mobile phase consisted of a mixture of 80 volumes of acetonitrile and 20 volumes of water. The chromatography was performed by isocratic elution at a flow rate of 1 mL/min. Analytes were detected at 250 nm, with linear calibration curves at concentration ranges of 2-12 µg/ml and 50-300 µg/ml for AML and CEL respectively. The retention time of AML and CEL were 1.98 and 3.15 min respectively. The recoveries obtained were 99.46‒101.36% for AML, 99.57‒101.42% and 99.96–100.87 % for CEL. The method was validated according to International conference of harmonisation guidelines in terms of accuracy, precision, specificity, robustness, limits of detection and quantitation, and other aspects of analytical validation. The developed method was applied successfully for HPLC analysis of commercial pharmaceutical products including AML and CEL. Keywords: Amlodipine besylate; Celecoxib; RP-HPLC.
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