ethyl 3-oxobutanoate;Ethyl acetoacetate-1,2,3,4; 1-Ethoxybutane-1,3-dione; 3-Oxobutanoic Acid Ethyl Ester; 3-Oxobutyric Acid Ethyl Ester; Acetylacetic Acid Ethyl Ester; EAA; Ethyl 2-Acetoacetate; Ethyl 2-Methyl-3-oxopropionate; Ethyl 3-Ketobutyrate; Ethyl 3-Oxobutanoate; Ethyl 3-Oxobutyrate; Ethyl Acetoacetate; Ethyl Acetonecarboxylate; Ethyl Acetylacetate; NSC 37390; NSC 8657;diacetic ether;Active acetylacetate;ethyl 3-keto-n-butanoate;ethyl beta-ketobutyrate