OBJECTIVE:To establish the method for determining the content of Lomefloxacin in hollow type suppository of Lomefloxacin hydrochloride.METHODS:RP-HPLC was used with Eclipse XDB-C 18 column(4.6mm?250mm)and the mobile phase consisting of citric acid(0.05mol/L)-acetonitrile(82∶18)the pH of which was adjusted to4.0with triethy?lamine.The flow rate was1.0ml/min and the detection wavelength was287nm.RESULTS:The average recovery of Lome?floxacin was99.8%and RSD was0.6%.CONCLUSION:The method is rapid and accurate and can be used for determination of the content of Lomefloxacin in hollow type suppository.

OBJECTIVE:To study the bacterial endotoxin test for lomefloxacin hydrochloride and glucose injection.METHODS:According to the assigned method and guiding principle for bacterial endotoxin test in CHINESE PHARMACOPOEIA 2000,the interference test was performed.RESULTS:Lomefloxacin and glucose injection could interfere with limulus test,however,the interference could be eliminated after adjusting the pH of injection to 6.8～7.0.The proper concentration of limulus test agent of bacterial endotoxin test was 0.25EU/ml.CONCLUSION:Bacterial endotoxin test can be used for quality control of lomefloxacin and glucose injection.