of the mixtures were detected at 218 nm. For the best separation of the mentioned components different parameters were examined and optimized. The two suggested methods were validated in compliance with the ICH guidelines and were successfully applied for the quantification of the cited components in presence of their obtained degradation products as well as in their commercial pharmaceutical formulations
开发,优化和验证了两种RP-HPLC方法,用于在降解产物或杂质存在及其药物制剂中测定两种不同的抗高血压组合。第一种混合物是
雷米普利(R
AM)和
苯磺酸氨氯地平(
AML)[混合物I],而第二种混合物是
雷米普利(R
AM),
阿托伐他汀(ATV)和
阿司匹林(A
SP)[混合物II]。提议的组合已在X桥C 18上成功分离色谱柱(250×4.6 mm内径,5 µm ps),使用0.05 M
磷酸盐缓冲液-
乙腈-THF(60:40:0.1%体积)pH 2.5的流动相和由
乙腈-0.05 M
磷酸盐形成的等度流动相混合物(I)和(II)的缓冲液-THF(60:40:0.1体积%)pH 2.5,流速分别为1 mL / min和1.2 mL / min。在218 nm处检测到混合物中的有害成分。为了最好地分离上述组分,检查并优化了不同的参数。两种建议的方法均已按照ICH指南进行了验证,并成功地用于存在的降解产物及其商业