2-Hydroxy-5-nitro-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
2-Fluoro-4-methyl-3-(trifluoromethoxy)pyridine-5-sulfonamide
6-Hydroxy-4-nitro-3-(trifluoromethoxy)pyridine-2-carboxaldehyde
3-Hydroxy-2-methoxy-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine