A fast, high-performance liquid chromatography method was established to estimate Oxymetazoline hydrochloride and Isoxsuprine hydrochloride in pharmaceutical preparations HPLC.It consists of an Azorbax-C8 (250mm ×4.6 mm, 5µm ) column with a mobile phase composed of methanol:acetonitrile: buffer (0.01 M) potassium dihydrogen phosphate with triethylamine (pH 5.5) (50: 10:40, V/V/V ) eluted at 1.5 ml...