2-Bromo-2-methylpropanoic acid 2-Bromo-2-methylpropionic acid 2-Bromoisobutyric acid 2052-01-9 280757-31-5 EINECS 218-139-2 Isobromobutyric acid NSC 41213 Propanoic acid, 2-bromo-2-methyl- Propionic acid, 2-bromo-2-methyl- Propionic acid, 2-bromo-2-methyl- (8CI) alpha-Bromo-alpha-methylpropionic acid alpha-Bromoisobutyric acid