Establishment of the determination method for illegal composition rhaponticin in Liuwei Nengxiao preparations
Objective To establish a method for the determination of illegal composition rhaponticin in Liuwei Nengxiao Pills(Cap-sules and Tablets).Methods Thin layer chromatography(TLC)method and high performance liquid chromatography(HPLC)method were employed to identify rhaponticin in the samples primarily.Then HPLC-MS method was employed to confirm the rha-ponticin in positive samples.Results Among 101 batches of Liuwei Nengxiao Pills(Capsules and Tablets),12 batches containing rhaponticin were detected.Conclusion The established method is specific,and can be used to detect the illegal composition of rhapon-ticin in Liuwei Nengxiao preparations.