6-Hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-4-acetonitrile
2-Hydroxy-5-nitro-3-(trifluoromethoxy)pyridine-6-acetonitrile
2-Hydroxy-4-nitro-6-(trifluoromethoxy)pyridine-3-acetonitrile
2-Hydroxy-5-methoxy-3-(trifluoromethoxy)pyridine-6-carboxaldehyde