LC-UV METHOD DEVELOPMENT AND VALIDATION FOR THE NON STEROIDAL ANTI-INFLAMMATORY AGENT TENOXICAM

Abstract

A rapid and sensitive reversed phase high performance liquid chromatographic (HPLC) method was developed and validated for the analysis of tenoxicam in raw material and its pharmaceutical formulation.

The analysis was carried out on a reversed phase C₁₈ column, using mixtures of buffer/acetonitrile (40:60, v/v) with flow rate was of 1 mL min⁻¹. The method was validated statistically for its linearity (correlation coefficient = 0.9983), accuracy, robustness, and intermediate precision. An experimental design was used during validation to evaluate method robustness and for the determination of intermediate precision. To test robustness, four factors were considered, mainly, percentage of organic modifier in the mobile phase, pH, flow rate, and different wavelengths. An increase of the flow rate results in a decrease of the drug concentration found, while the percentage of organic modifier, pH, and wavelength have no significant effect on the response. For intermediate precision the factors examined were multiple analysts, multiple instruments, and multiple days. The RSD value (0.49%, n = 24) indicated a good precision of the analytical method. Due to its simplicity, accuracy, sensitivity, and precision the method may be used for routine quality control analysis.

Keywords:

• high performance liquid chromatography (HPLC)
• pharmaceutical analysis
• tenoxicam

ACKNOWLEDGMENT

We would like to thank the College of Research and Graduate Studies at the University of Sharjah-UAE for their generous financial assistance (research grant 091106).