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