methyl 3-oxobutanoate;Methyl Ester Acetoacetic Acid; 3-Oxobutanoic Acid Methyl Ester; 3-Oxobutyric Acid Methyl Ester; Acetoacetate Methyl Ester; Methyl 3-Oxobutanoate; Methyl 3-Oxobutyrate; Methyl Acetoacetate; Methyl Acetylacetate;1-Methoxybutane-1,3-dione;Butanoic acid, 3-oxo-, methyl ester;3-Oxobutanoic acid methyl ester