Simultaneous Estimation of Pregabalin and Etoricoxib in Bulk and Pharmaceutical Dosage Form by Using RP-HPLC Method
Abstract
A simple, accurate, precise method was developed for the simultaneous estimation of the Pregabalin and Etoricoxib in bulk and Pharmaceutical dosage form. Chromatogram was run through Ascentis (C18 150 x 4.8 mm, 2.8m). Mobile phase containing Buffer 0.01N Methanol: Na2HPO4 (0.1%OPA is added to adjust pH 5.4) taken in the ratio 70:30 was pumped through column at a flow rate of 1ml/min. Temperature was maintained at 30°C. Optimized wavelength selected was 235nm. Retention time of Pregabalin and Etoricoxib were found to be 2.396 minutes and 2.968 minutes. %RSD of the Pregabalin and Etoricoxib were found to be 1.0 and 1.1 respectively. %Recovery was obtained as 99.82% and 99.99% for Pregabalin and Etoricoxib respectively. LOD, LOQ values obtained from regression equations of Pregabalin and Etoricoxib were 0.27, 0.81 and 0.18, 0.55 respectively. Regression equation of Pregabalin is y=3501.2x+839.82, and y=3696.3x+1383.5 for Etoricoxib. Retention time and run time was decreased, so the method was developed simple and economical that can be adopted in regular Quality control test.
Keywords: Pregabalin, Etoricoxib, RP-HPLC, Method validation
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