2-Fluoro-3-hydroxy-6-nitro-4-(trifluoromethoxy)pyridine
2-Fluoro-3-hydroxy-4-nitro-6-(trifluoromethoxy)pyridine
2-Cyano-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetonitrile
2-Cyano-3-(difluoromethyl)-6-(trifluoromethoxy)pyridine-4-acetonitrile