CID is 6420057
synonyms found at PubChem are:
56392-17-7, 1-(Isopropylamino)-3-(4-(2-methoxyethyl)phenoxy)propan-2-ol 2,3-dihydroxysuccinate (2:1), Metoprolol-(+,-) (+)-tartrate salt, Prestwick_1009, AC1O4WIQ, SCHEMBL2051655, CHEMBL2062335, CTK8B7746, KS-00000XQB, MolPort-003-983-883, HMS1570C08, HMS3651I21, (A+/-)-Metoprolol (+)-tartrate, ANW-58344, AKOS016002993, RTR-019802, (.+-.)-tartaric acid; bis(metoprolol), KB-215768, 1-(Isopropylamino)-3-(4-(2-methoxyethyl)phenoxy)-propan-2-ol 2,3-dihydroxysuccinate (2:1), 1-(Isopropylamino)-3-(4-(2-methoxyethyl)phenoxy)propan-2-ol 2,3-dihydroxysuccinate, 1-[4-(2-Methoxyethyl)phenoxy]-3-[(1-methylethyl)amino]-2-propanol hemitartrate, Metoprolol tartrate solution, 1.0 mg/mL in methanol (as free base), ampule of 1 mL, certified reference material