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Abstract
The present paper describes strategic development and validation of stability-indicating method for the determination of impurities present in Darunavir tablets. Separation of impurities at satisfactory level is achieved in 100 mm length × 2.1 mm ID, octadecyl column with 1.8 µm particle size. Mobile phase buffer consists of 0.1% orthophosphoric acid in water adjusted the pH 3.0 with triethylamine and acetonitrile using gradient elution mode. Finalized flow rate was 0.2 mL min−1 with a monitoring wavelength of 265 nm. Developed method was successfully validated for specificity, linearity, precision, accuracy, determination of limit of detection, limit of quantification, and robustness as per International Conference on Harmonization general guidelines requirement. The proposed validated reverse phase–ultra-performance liquid chromatography (RP-UPLC) method was shorter in run time and successfully used for quantification of all process and degradation impurities present in Darunavir tablets.