Method for mass control of impurities in felodipine metoprolol succinate sustained-release tablets

The invention provides a method for mass control of impurities in felodipine metoprolol succinate sustained-release tablets. By adoption of the method for mass control, contents of felodipine impurities and metoprolol succinate impurities in the felodipine metoprolol succinate sustained-release tablets can be detected simultaneously. Owing to adoption of high performance liquid chromatography, the method has advantages of simplification, time saving, energy saving and high operability and is quite beneficial to application in industrial production. 本发明提供种非洛地平琥珀酸美托洛尔缓释片中杂质的质量控制方法，其是种可以同时检测非洛地平琥珀酸美托洛尔缓释片中非洛地平杂质、琥珀酸美托洛尔杂质含量的质量控制方法，该方法采用高效液相色谱法，方法简化、省时节能的、可操作性强，十分有利于工业化生产的应用。