.alpha.-Bromoisovaleric acid ethyl ester 609-12-1 Butanoic acid, 2-bromo-3-methyl-, ethyl ester Butyric acid, 2-bromo-3-methyl-, ethyl ester Ethyl .alpha.-bromoisovalerate Ethyl 2-bromo-3-methylbutanoate Ethyl 2-bromo-3-methylbutyrate Ethyl 2-bromoisovalerate NSC8866