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