Objective: Accurate, precise and robust method was developed for the simultaneous estimation of long acting β2 agonist drugs (Formoterol fumarate, Salmeterol xinafoate and Vilanterol trifenatate) along with two organic counterparts (Xinafoic acid and Triphenyl acetic acid) and inhaled corticosteroids (Fluticasone propionate and Fluticasone furoate).
Material And Methods: The separation was carried out using C column (250 x 4.6 mm, 5 μ) with eluent comprising of 0.05% orthophosphoric acid: methanol: acetonitrile (40:30:30, v/v/v) at a 1 mL/min flow rate.
Results: Linearity was observed in the concentration ranges of 1.5-12 μg/ mL for Formoterol fumarate, 2.82-22.6 μg/mL for Xinafoic acid, 6.25-50 μg/mL for Vilanterol, 3.12-25 μg/mL for Salmeterol, 2.0-15.2 μg/mL for Triphenyl acetic acid, 62.5-500 μg/mL for Fluticasone propionate and 25-200 μg/mL for Fluticasone furoate.
Conclusion: The proposed method was accurate, precise and robust and results were within the limit as per the ICH (Q2R1) guidelines. Additionally, the proposed method was found to be green and sustainable when analysed by different green analytical tools namely GAPI, AGREE, AGREEprep and BAGI.
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