Methyl 3-bromo-5-fluoro-6-(trifluoromethoxy)pyridine-2-acetate
Methyl 3-bromo-5-fluoro-4-(trifluoromethoxy)pyridine-2-acetate
Methyl 5-bromo-4-fluoro-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 3-bromo-5-fluoro-2-(trifluoromethoxy)pyridine-4-acetate