5-bromo-7-ethyl-2-acetoxymethyl-2,3-dihydrobenzofuran

2-acetoxymethyl-5-bromo-7-ethylbenzofuran

2,2-diethoxyethyl (4-bromo-6-ethyl-2-formyl)phenyl ether

2-acetoxymethyl-5-bromo-7-(1-bromoethyl)benzofuran