Development and Validation of A Stability Indicating Liquid Chromatographic Method for Simultaneous Estimation of Arterolane Maleate and Piperaquine Phosphate in Combined Dosage Form G. SRINIVAS REDDY*, S.L.N. PRASAD REDDY and L. SHIVAKUMAR REDDY

A novel stability indicating isocratic, reversed phase-liquid-chromatographic method has been developed for the simultaneous quantitative determination of Arterolane maleate And Piperaquine phosphate in combined-dosage form. A thermo hypersil BDS C18 (250*4.6*5μ) column with mobile phase containing water pH 2.8 adjusted with ortho phosphoric acid: methanol in the ratio of (60: 40, v/v) was used. The flow rate was 1.0 mL/min, column temperature was 30°C and effluents were monitored at 241 nm. The retention times of Arterolane Maleate and Piperaquine Phosphate were 1.864min and 3.047min, respectively. Correlation co-efficient for Arterolane Maleate and Piperaquine Phosphate was found to be 0.99 and 0.99, respectively. The proposed method was validated with respect to linearity, accuracy, precision, specificity, and robustness. Recovery of Arterolane Maleate and Piperaquine Phosphate in formulations was found to be in the range of 97-103% and 97103% respectively confirms the non-interferences of the excipients in the formulation. Arterolane Maleate and Piperaquine Phosphate were exposed to stress conditions like acidic hydrolysis, basic hydrolysis, oxidative, photolytic, humidity and thermal conditions. Due to its simplicity, rapidness and high precision, the method was successfully applied to the estimation of Arterolane Maleate and Piperaquine Phosphate in combined dosage form.