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