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