esmolol

Also known as (±)-esmolol, (±)-methyl p-(2-hydroxy-3-(isopropylamino)propoxy)hydrocinnamate, methyl p-(2-hydroxy-3-(isopropylamino)propoxy)hydrocinnamate, 3-[4-(2-hydroxy-3-isopropylamino-propoxy)-phenyl]-propionic acid methyl ester, methyl 4-(2-hydroxy-3-((1-methylethyl)amino)propoxy)benzenepropanoate

Esmolol, sold under the brand name Brevibloc, is a cardio selective beta1 receptor blocker with rapid onset, a very short duration of action, and no significant intrinsic sympathomimetic or membrane stabilising activity at therapeutic dosages.