2-Fluoro-5-hydroxy-4-(trifluoromethoxy)pyridine-3-carboxaldehyde
2-Hydroxy-3-methoxy-5-nitro-4-(trifluoromethoxy)pyridine
2-Fluoro-4-hydroxy-5-(trifluoromethoxy)pyridine-3-carboxaldehyde
5-(Bromomethyl)-2-fluoro-4-hydroxy-3-(trifluoromethoxy)pyridine