英文别名4-(4-aminophenyl)-3-methyl-4-oxobutanoic acid,hydrochloride; Benzenebutanoic acid, 4-amino-β-methyl-γ-oxo-, hydrochloride (1:1); 4-amino-β-methyl-γ-oxo-Benzenebutanoic acid hydrochloride (1:1); Levosimendan Impurity(Hydrochloride); 4-Amino-beta-methyl-gamma-oxo-benzenebutanoic acid HCl