A Validated Sensitive Stability Indicating HPLC Method for the Determination of Etoricoxib in Bulk and Formulation

Aim: The current research aims to create a high-resolution and validated liquid chromatographic method used for quantitative detection of etoricoxib within dosage forms that is both easy to use and reliable in terms of accuracy, sensitivity, and reproducibility. Materials and Methods: Analysis was carried out at isocratic conditions at flow rate of 0.7 mL/min using a mobile phase consisting of 40 parts methanol to 60 parts water (0.1% OPA) at pH 3.2. The eluents were tested using UV detection at 236 nm. Results: Etoricoxib had clearly separated peaks with a retention duration of 4.347 minutes in the optimized settings. The concentration range used to generate the calibration curve was 10 to 60 μg/mL. LoD was 0.0779 μg/mL, and upper LoQ was 0.23 μg/mL. The approach has been effective in separating a known quantity of etoricoxib, and the percentage of degradation was shown to be very low across all stress settings. Conclusion: Etoricoxib in bulk drug and commercial formulations can be identified and quantified using the proposed method, which has been validated in accordance with ICH recommendations.