Ethyl 4-bromo-3-oxobutanoate;Ethyl 4-bromoacetoacetate;Ethyl 4-Vromoacetoacetate;4-broMo ethyl acetoacetate;Ethyl 4-bromo-3-oxo-butyrate;4-BroMoacetoacetic acid ethyl ester;4-Bromo-3-oxobutanoic acid Et ester;4-Bromo-3-oxo-butyric acid ethyl ester;4-BroMo-3-oxo-butyric acid Methyl ester ;