Synonyms: Bisoprolol Ester,2-Isopropoxyethyl 4-[[(2RS)-2-Hydroxy-3-(isopropylamino)propyl]oxy]benzoate, Bisoprolol Fumarate Imp. K (EP), Benzoic acid, 4-[2-hydroxy-3-[(1-methylethyl)amino]propoxy]-, 2-(1-methylethoxy)ethyl ester (9CI), 2-(1-Methylethoxy)ethyl ester-4-[2-hydroxy-3-[(1-methylethyl)amino]propoxy] benzoic acid, 2-(1-Methylethoxy)ethyl 4-[2-hydroxy-3-[(1-methylethyl)amino]propoxy]benzoate (ACI)