Formoterol fumarate
Arformoterol fumarate is a fumarate salt prepared from arformoterol by reaction of one molecule of fumaric acid for every two molecules of arformoterol. It has a role as a beta-adrenergic agonist and a bronchodilator agent. It contains an arformoterol(1+). It is an enantiomer of a (S,S)-formoterol fumarate.