Methyl 3-fluoro-4-hydroxy-5-(trifluoromethoxy)pyridine-2-acetate
Methyl 3-fluoro-2-hydroxy-6-(trifluoromethoxy)pyridine-5-acetate
Methyl 6-fluoro-2-hydroxy-3-(trifluoromethoxy)pyridine-4-acetate
2-Fluoro-5-hydroxy-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine