Nora H. Al-Shaalan et al: Determination of Chlorphineramine maleate, Dextromethorphan HBR and Phenylephrin HCl in Codilar syrup using HPLC

A simple, selective, sensitive and precise, simultaneous high performance liquid chromatographic analysis of syrup containing Chlorphineramine Maleate, Dextromethorphan HBr and Phenylephrin HCl was described. Good chromatographic separation was achieved using a Zorbax C18 (4.6 cm x 250 mm, 5 μm) and a mobile phase consisting of acetonitrile-phosphate buffer pH 3.5 (15:85, v/v) at a flow rate 0.9 mL/min. The ultraviolet detector was set at wavelength 280 nm. Chlorphineramine Maleate, dextromethorphan HBr and Phenylephrin HCl were measured at 2.789, 3.645 and 13.521 min, respectively. The linear ranges for chlorphineramine maleate, dextromethorphan HBr and phenylephrin HCl were 10-50, 10-50 and 5-45 μg/mL, respectively. The recoveries of chlorphineramine maleate, dextromethorphan HBr and phenylephrin HCl in pharmaceutical preparation were all greater than 98% and their relative standard deviations were less than 2.0%. The limits of detection were 2.57, 0.19 and 0.003 μg/mL for Chlorphineramine Maleate, Dextromethorphan HBr and Phenylephrin HCl, respectively.