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