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目的:建立联苯双酯晶型的测定方法,并对国内联苯双酯原料的晶型进行考察。方法:利用红外分光光度法测定联苯双酯的晶型,考察不同混合比例下样品红外图谱的差异。结果:国内不同生产企业生产的联苯双酯原料晶型不同,存在A晶型、B晶型和混合晶型。结论:该分析方法简便、快捷,可有效地控制联苯双酯的晶型。
Objective: To establish a method for the determination of bifendate crystal form and to investigate the crystal form of bifendate in China. Methods: The crystal form of bifendate was determined by infrared spectrophotometry, and the differences of infrared spectra of samples were investigated under different mixing ratios. Results: The raw materials of bifendate produced by different domestic manufacturers differed from each other in form A, B and mixed. Conclusion: The method is simple, rapid and can effectively control the crystal form of bifendate.