@article{Bhatt_Rajkamal_2016, title={A UPLC-MS/MS METHOD DEVELOPMENT AND VALIDATION FOR THE ESTIMATION OF SOFOSBUVIR FROM HUMAN PLASMA}, volume={9}, url={https://journals.innovareacademics.in/index.php/ijap/article/view/15652}, DOI={10.22159/ijap.2017v9i1.15652}, abstractNote={<p><strong>Objective: </strong>The present work aimed to develop a simple, rapid, specific and precise ultra-performance liquid chromatography-tandem mass spectrophotometric (LC–MS/MS) validated method for quantification of sofosbuvir and internal standard (ISTD) Sofosbuvir-d3 in human plasma.</p><p><strong>Methods: </strong>Samples prepared by employing liquid-liquid extraction (LLE) using 2.5 ml of ethyl acetate. Chromatographic separation was achieved on Gemini 5µ C18, 50 x 4.6 mm column using a mixture of 0.1% (v/v) formic acid in water to methanol at a ratio of 30:70 v/v as the mobile phase. The flow rate was 0.50 ml/min. The LC eluent was split, and approximately 0.1 ml/min was introduced into Tandem mass spectrometer using turbo Ion Spray interface at 325 °C. Quantitation was performed by transitions of 428.35/279.26 <em>(m/z) </em>for sofosbuvir and <em>431.38/282.37 (m/z) </em>for sofosbuvir-d3.</p><p><strong>Results: </strong>The concentrations of ten working standards showed linearity between 4.063 to 8000.010ng/ml (<em>r</em><sup>2</sup> ≥ 0.9985). Chromatographic separation was achieved within 2 min. The average extraction recoveries of three quality control concentrations were 75.36% for sofosbuvir and were within the acceptance limits. The coefficient of variation was ≤15% for intra-and inter-batch assays. The %CV of ruggedness ranges 0.35% and 3.09%. The % stability of short term and long term stock solution stability studies was found to be 97.25% and 98.81% respectively.</p><p><strong>Conclusion: </strong>The results obtained for specificity, linearity, accuracy, precision, ruggedness and stability studies were within the acceptance limits. Thus the validated economical method was applied for pharmacokinetic studies of sofosbuvir.</p>}, number={1}, journal={International Journal of Applied Pharmaceutics}, author={Bhatt, Darshan and Rajkamal, B.}, year={2016}, month={Dec.}, pages={30–36} }