A simple, precise, and sensitive stability-indicating high-performance thin layer chromatographic (HPTLC) method has been developed and validated for the analysis of Darunavir in bulk and in the tablet dosage form. The separation was performed on pre-coated silica gel 60 GF 254 plates using Toluene: Methanol: Triethylamine (8.5:1:0.5 v/v/v) as the mobile phase. The retention factor (R f ) was found to be 0.61 ± 0.89. The detection of a band was carried out at 267 nm. The drug was subjected to different stress conditions like acid, base hydrolysis, oxidation, thermal degradation, and photolysis. The method was successfully validated according to ICH Q 2 (R1) guidelines. The linear regression analysis data for the calibration plot showed a good linear relationship with R 2 = 0.992 in the range of 500-3000 ng band -1 . The method found to be accurate as results of the recovery studies are close to 100%. The developed method can be adopted for routine analysis of Darunavir in bulk and pharmaceutical dosage form.
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