3-Fluoro-2-hydroxy-6-(trifluoromethoxy)pyridine-4-sulfonamide
4-Fluoro-3-(fluoromethyl)-2-hydroxy-6-(trifluoromethoxy)pyridine
4-Fluoro-2-(fluoromethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine
3-Fluoro-2-hydroxy-4-(trifluoromethoxy)pyridine-6-sulfonamide