methyl 4-oxobutanoate;4-oxobutanoic acid methyl ester;4-ketobutyric acid methyl ester;13865-19-5;methyl 4-oxobutanoate;EINECS 237-611-9;Succinaldehydic acid, methyl ester;589098_ALDRICH;Methyl 4-oxobutyrate
methyl 4-oxobutanoate