2-Fluoro-3-hydroxy-6-(trifluoromethoxy)pyridine-4-carboxaldehyde
4-Fluoro-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-6-carboxaldehyde
2-Fluoro-3-hydroxy-4-(trifluoromethoxy)pyridine-6-carboxaldehyde
5-Fluoro-2-hydroxy-3-(trifluoromethoxy)pyridine-6-methanol