STABILITY INDICATING RP-HPLC METHOD FOR THE ESTIMATION OF DIETHYLCARBAMAZINE CITRATE, GUAIPHENESIN AND CHLORPHENIRAMINE MALEATE

Objective: The present work describes the development and subsequent validation of a simple, precise and stability–indicating reversed-phase high-performance liquid chromatography (RP-HPLC) method for the simultaneous estimation of diethylcarbamazine citrate, guaiphenesin and chlorpheniramine maleate in tablet dosage forms.Methods: A simple, accurate, precise and robust RP-HPLC method was developed and validated for the estimation of diethylcarbamazine citrate, guaiphenesin and chlorpheniramine maleate. The chromatographic separation of all the three active components was achieved by using luna phenyl-hexyl column (250 mmx4.6 mm, dp=5 µm) with a mobile phase consisting of isocratic method with 0.1% triethylamine as buffer along with orthophosphoric acid adjusted to PH 2.5: acetonitrile (50:50v/v) at a flow rate 1.0 ml/min and ultraviolet detection at 210 nm.Results: The retention time of chlorpheniramine maleate, guaiphenesin and diethylcarbamazine citrate were 2.86, 4.89 and 7.76 min respectively. Validation of the proposed method was carried out according to an international conference on harmonization (ICH) guidelines. The established method was linear in the range of 1-15, 0.6-9, 0.02-0.3 µg/ml and correlation coefficient was 0.999, 0.9991, and 0.993 for diethylcarbamazine citrate, guaiphenesin and chlorpheniramine maleate respectively.Conclusion: The proposed method can be used for the quantitative analysis of diethylcarbamazine citrate, guaiphenesin and chlorpheniramine maleate