Objective: To study the related substances of azithromycin. Method: Analysis of the related substances of azithromycin was carried out by high performance liquid chromatography(HPLC) - electrospray ionization (ESI) -mass spectrometer(MS).

• 目的:用高效液相色谱-电喷雾-质谱(HPLC-ESI-MS)法对阿奇霉素的相关物质进行分析。 方法:采用LG-ESI-MS法对阿奇霉素的相关物质进行初步研究。