文摘
A novel stability-indicating high-performance liquid chromatographic (HPLC) method has been developed and validated for the analysis of the impurities A–G in cabazitaxel. Chromatographic separation was achieved on a Welch Xtimate?C18 (250?×?4.6?mm; 5?μm) column, using the mixture of 0.02?mol?L? sodium dihydrogen phosphate buffer pH 3.0 (pH value was adjusted with phosphoric acid) and acetonitrile as mobile phase by gradient elution with a flow rate of 1.0?mL?min?, and UV detection was performed at 230?nm. The column temperature was maintained at 40?°C by column oven. The method was validated according to the International Conference on Harmonization (ICH) guidelines. Linearity (r?>?0.9990) was observed over the concentration ranges of 25.0-500.0, 31.5-518.0, 74.9-796.8, 65.6-573.2, 59.4-425.6, 22.2-332.0, 1.3-570.8, 30.8-476.0?ng?mL? of cabazitaxel and its impurities A–G, respectively. The RSD value of the recovery for each impurity was <5.0?% (n?=?9). The method was found simple and rapid with good specificity and robustness, which can be suitable for the determination of the impurities in cabazitaxel.