[Determination of benproperine phosphate tablets by high performance liquid chromatography]

A reversed-phase HPLC method for the determination of benproperine phosphate tablets is reported. The chromatographic conditions were Hypersil-C18 column(5 microns, 4.6 mm i.d. x 150 mm) at 35 degrees C, mobile phase of methanol-water-glacial acetic acid-triethylamine(60:35:5:0.1, V/V) with a flow rate of 0.9 mL/min and UV detection at 270 nm. Cortisone acetate was selected as the internal standard. The linear relationship of calibration curve was good in the range of 9.96 mg/L-49.8 mg/L(r = 0.9998). The average recovery and RSD were 99.91%(n = 5) and 0.43% respectively. The total time of analysis for a run was within 7 min. The method is simple, sensitive, rapid and accurate.