Development and validation of rp-hplc method for analysis of aclidinium bromide and formoterol fumarate in pharmaceuticals

A fast, sensitive, and reliable RP-HPLC method involving cyberlab HPLC System with PDA detection was developed and validated for the quantification of Aclidinium bromide and Formoterol fumarate in inhalation preparations. Chromatography was performed on the Inertsil -ODS C₁₈ (250 × 4.6mm, 5μ) column using filtered and mixed degassed methanol: buffer (75:25 v/v) as a mobile phase with a flow rate of 1.0mL/min and the column effluent was monitored at 240nm. Retention times for Aclidinium bromide 4.713min and Formoterol fumarate 6.691min. The method obeyed linearity in the concentration range of 20-80μg/mL for the two drugs when validated according to standard procedures.