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LC method for the determination of oxcarbazepine in pharmaceutical preparations
1Department of Chemistry, School of Chemical Engineering and Materials Science, Beijing Institute of Technology, 100081 Beijing, People's Republic of China. mlqi@bit.edu.cn
Abstract:
A simple and accurate HPLC method for determination of oxcarbazepine (OXC) in a new tablet formulation is described. Chromatographic separation was achieved on a Diamonsil C18 column using a mobile phase consisting of acetonitrile, potassium phosphate monobasic buffer (pH 6.8) and water (36:8:56, v/v) at a flow rate of 1.0 ml/min. Absorbance was monitored at 255 nm where OXC has maximum absorption. The linear range of detection for OXC was from 9.96 to 99.6 microg/ml. The proposed method was validated for selectivity, precision, accuracy and limits of detection and quantitation, etc.