Indacaterol maleate is used for treatment of Chronic Obstructive Pulmonary Disease. It has a role as a beta-adrenergic agonist and a bronchodilator agent. The maleate salt is obtained by reaction of Indacaterol with one equivalent of Maleic acid.
The chemical name of Indacaterol maleate is (R)-5-[2-(5,6-Diethylindan-2-ylamino)-1- hydroxyethyl]-8-hydroxy-1H-quinolin-2-one maleate corresponding to the molecular formula C24H28N2O3.C4H4O4 and molecular weight of 508.56.
Indacaterol maleate appears as a white to slightly greyish or slightly yellowish powder that is freely soluble in N-Methyl pyrrolidone and practically insoluble in Ethyl acetate. Its melting point is 195-197°C (dec.)