RESUMO
Objectives: The primary goal of this study was to create and validate a simple, precise, sensitive, and accurate ultra-performance liquid chromatography (UPLC) method for estimating tirbanibulin in pure and dosage form. Materials and Methods: A UPLC technique was developed using a Waters Acquity UPLC Phenyl (100 x 2.1 mm, 1.7 µm) column. The developed technique was validated in accordance with the International Conference on Harmonization (ICH) guidelines. Results: Tirbanibulin was separated chromatographically with high resolution using the mobile phase acetonitrile: buffer (30:70 v/v) at 0.5 mL/min, 5 µL injection volume, and 220 nm wavelength. The validated technique was found to be linear in the 1-15 µg/mL range. The detection and quantification limits for tirbanibulin were 0.03 and 0.1 µg/mL, respectively. The percentage relative standard deviation was less than 2%, demonstrating the precision of the developed technique. Furthermore, the recovery rate was nearly 100%, confirming the accuracy of the method. Minor modifications to the chromatographic conditions demonstrated the robustness of the method. Conclusion: The developed analytical method was precise, simple, reproducible, and sensitive. Consequently, it can be used to determine tirbanibulin.
RESUMO
Margetuximab was approved for the treatment of advanced HER2+ breast cancer. A feasible analytical technique that can measure this drug was obligatory. In light of this, a novel and thoroughly validated liquid chromatographic (LC)-tandem mass spectrometric (MS/MS) approach was developed for the quantification of margetuximab in rat plasma. The liquid-liquid extraction method was used to extract the analyte from rat plasma. The analyte was separated using acetonitrile and formic acid buffer (30:70) as a mobile phase on Waters, alliance e-2695 model HPLC having Symmetry C18 column, 150 mm × 4.6 mm, 3.5-µm column. The overall runtime was 6 min at a flow rate of 1.0 ml/min. The method showed significant sensitivity and acceptable linearity over the concentration range of 6-120 ng/ml. Accuracy was within 98.51-99.92%. The intraday precision ranged between 0.41 and 8.98% CV. Also, the findings of pharmacokinetic parameters such as Cmax, tmax, AUC0-∞, AUC0-t, and half-life results of margetuximab showed that the technique was helpful for accurately measuring drug concentrations in rat plasma. The method that was developed was useful and effective for quantifying margetuximab.
