Des(isopropoxyethyl) Bisoprolol;H 119/68;Bisoprolol Impurity 1(Bisoprolol EP Impurity A);4-[2-Hydroxy-3-[(1-Methylethyl)aMino]propoxy]benzeneMethanol;Bisoprolol EP IMpurity A;Bisoprolol EP Imp A;Bisoprolol Fumarate EP Impurity A;1-[4-(hydroxymethyl)phenoxy]-3-(propan-2-ylamino)propan-2-ol