申请人:JIANGSU AOSAIKANG PHARMACEUTICAL CO., LTD.
公开号:US11187683B2
公开(公告)日:2021-11-30
A high performance liquid chromatography method used for dexrazoxane-related substances is provided, and in the method, a low-density bonding reversed-phase C18 chromatographic column resistant to pure water is employed; a gradient elution is carried out with mobile phase A and mobile phase B as eluents, the mobile phase A being a buffer, and the mobile phase B being an organic solvent; the volume percent of mobile phase A in eluents in a first stage of the gradient elution is not lower than 90%, and the duration of the first stage of the gradient elution ranges from 15˜30 minutes. By means of the analytical method, dexrazoxane is effectively separated from main impurities, and the qualities of the active pharmaceutical ingredients of dexrazoxane and the preparations thereof could be better controlled.
本发明提供了一种用于检测右雷佐生相关物质的高效液相色谱法,该方法采用了一种耐纯水的低密度键合反相 C18 色谱柱;以流动相 A 和流动相 B 为洗脱液进行梯度洗脱,流动相 A 为缓冲液,流动相 B 为有机溶剂;梯度洗脱第一阶段洗脱液中流动相 A 的体积百分比不低于 90%,梯度洗脱第一阶段的时间为 15 ~ 30 分钟。通过该分析方法,可以有效地将右雷佐生与主要杂质分离,从而更好地控制右雷佐生的有效药物成分及其制剂的质量。