A rapid, simple and specific reversed-phase HPLC method has been developed for estimation of Cilnidipine in Pharmaceutical Formulation. HPLC analysis was performed on a C18 column using a 80:20 (v/v) mixture of Methanol and 0.05 M Phosphate Buffer at pH 3.0 as isocratic mobile phase at a flow rate of 1 ml min−1. UV detection was carried at 254 nm. The method was validated for accuracy, precision, linearity, specificity. Validation revealed the method is specific, accurate, precise, reliable and reproducible. Good linear correlation coefficients (r2 > 0.9999) were obtained for calibration plots in the ranges tested. Limit of detection was 0.179 μg/ml and limit of quantification was 0.544 μg/ml. Intra and inter-day RSD of retention times and peak areas were less than 1.729% and recovery was between 99.95% and 101.09%. The established HPLC method is appropriate enabling efficient quantitative analysis of Cilnidipine in Pharmaceutical Formulation.
Cilnidipine, estimation, validation, tablets and HPLC
