Provided herein is an impurity of ranolazine, 1-[4-[2-hydroxy-3-(2-methoxy-phenoxy)-propyl]-piperazin-1-yl]-3-(2-methoxy-phenoxy)-propan-2-ol (dimer impurity-3), and process for preparing and isolating thereof. Provided further herein is a highly pure ranolazine or a pharmaceutically acceptable salt thereof substantially free of dimer impurity-3, process for the preparation, and pharmaceutical compositions comprising highly pure ranolazine or a pharmaceutically acceptable salt thereof substantially free of dimer impurity-3.
本文提供了一种拉诺拉嗪的杂质,即1-[4-[2-羟基-3-(2-甲氧基-苯氧基)-丙基]-
哌嗪-1-基]-3-(2-甲氧基-苯氧基)-
丙醇(二聚体杂质-3),以及其制备和分离的方法。此外,本文还提供了一种高纯度的拉诺拉嗪或其药学上可接受的盐,基本上不含二聚体杂质-3,以及制备该高纯度拉诺拉嗪或其药学上可接受的盐的方法和包含该高纯度拉诺拉嗪或其药学上可接受的盐的药物组合物。