ALPHA-HYDROXYMETOPROLOL;benzenemethanol,4-(2-hydroxy-3-((1-methylethyl)amino)propoxy)-alpha-(methoxyme;h119/66;h119-66;alpha-Hydroxymetoprolol(unlabelled);4-[2-Hydroxy-3-[(1-methylethyl)amino]propoxy]-a-(methoxymethyl)-benzenemethan-ol;a-Hydroxy Metoprolol(Mixture of Diastereomers);a-Hydroxymetoprolo