Fig. 2

Representative HPLC chromatogram of indacaterol maleate (IND; 22 µg/mL), glycopyrronium bromide (GLY; 10 µg/mL) and tenoxicam (IS; 15 µg/mL) in commercial capsules. Chromatographic conditions: monolithic C18 column (100 mm, 4.6 mm id); mobile phase: acetonitrile-30 mM sodium phosphate of pH 3.5 (30:70, v/v); flow rate 2.0 mL/min; column temperature of 35 °C; detection: 210 nm