RP- HPLC Method for Simultaneous Estimation of Pseudoephidrine Sulphate and Desloratidine from Bulk and Tablets

A simple, selective, rapid, precise and economical reverse phase high-pressure liquid chromatographic method has been developed for the simultaneous estimation of Pseudoephidrine sulphate and Desloratidine from pharmaceutical formulation by using internal standard Nabumetone. The method was carried out on a HiQ sil C18 W (250mm x 4.6 mm) column, with a mobile phase consisting of Acetonitrile: Methanol :Ammonium acetate (45:40:15 v/v) at a flow rate of 1.5 ml/min. Detection was carried out at 265 nm. The retention time of Pseudoephidrine sulphate, Desloratidine, and Nabumetone were 2.067, 3.050 and 3.750min. Respectively. The developed method was validated in terms of accuracy, precision, linearity, Limit of detection, Limit of quantitation. The proposed method can be used for estimation of these drugs in combined dosage form for routine analysis.