Development and Application of a Validated Liquid Chromatography-Mass Spectrometry Method for the Determination of Dexchlorpheniramine Maleate in Human Plasma

A convenient liquid chromatographic-single Quadrupole mass spectrometric (LC-MS) method was developed and validated for dexchlorpheniramine maleate (INN name: chlorphenamine) determination in human plasma. The need for just a single liquid-liquid extraction with ethyl acetate and being highly sensitive were the advantages of this method. The linearity was also excellent over the range of 1 to 150 ng.ml -1 of dexchlorpheniramine maleate concentration. The method was statistically validated for its selectivity, linearity, precision and robustness. This method was successfully applied to the analysis of chlorpheniramine maleate in clinical studies.