Determination of prulifloxacin and its related substances in tablets by HPLC
【Abstract】 Objective To establish an HPLC-UV method for the determination of prulifloxacin and its related substances in tablets. Methods Diamonsil-C18 column (4.6mm×200mm, 5μm) was used. The mobile phase is consisted of 0.01mol/L triethylamine (pH was adjusted to 2.8 using phosphoric acid)-acetonitrile (73∶27). The flow rate was 1.0 ml/min with UV detection at 278nm. The column temperature was 30℃. The injection volume was 10μl.Results The linear range for the content of prulifloxacin was 10.0~200.0μg/ml (r=0.9999 3,n=5). The recoveries of prulifloxacin tablets were 99.6%,and its RSDs were 0.14 %.Conclusion The method is sample, efficient,accurate and specific.
【Key words】 prulifoxacin; tablets; HPLC;content determination; related substances