Objective: to determine the content of diclofenac sodium in diclofenac
sodium suppository by high performance liquid chromatography (HPLC). Methods:
the chromatographic column was Hypersil GOLDC1s (250 mm×4.6 mm, 5um), the
mobile phase was 0.1 mol/L glacial acetic acid solution - ethylene (50:50), and the
detection wavelength was 282 nm. Results: the average recovery rate of diclofenac
sodium was 99.31%, RSD=0.83% (n=5), and the mass concentration had a good linear
relationship with the peak area in the range of 63.2~ 147.2ug /mL. Conclusion HPLC
method is simple, fast and accurate.