503068-37-9

(1R)-2-[[6-[2-[(2,6-Dichlorobenzyl)oxy]ethoxy]hexyl]amino]-1-(2,2-dimethyl-4H-1,3-benzodioxin-6-yl)ethanol is an impurity of Vilanterol (V260000, Trifenatate), a long-acting β2 adrenergic receptor Agonist. It demonstrates prolonged bronchodilation in subjects with asthma and COPD.