英文名称:Betaxolol EP Impurity E; Betaxolol Ep Impurity E (Hcl); Betaxolol Impurity 5(Betaxolol Ep Impurity E); 2-Propanol, 1-[4-(2-Butoxyethyl)Phenoxy]-3-[(1-Methylethyl)Amino]-; (2Rs)-1-[4-(2-Butoxyethyl)Phenoxy]-3-[(1-Methylethyl)Amino]Propan-2-Ol; 1-(4-(2-Butoxyethyl)Phenoxy)-3-(Isopropylamino)Propan-2-Ol (Betaxolol Impurity); Betaxolol Ep Impurity E; Betaxolol Impurity E