5-Cyano-4-(difluoromethyl)-2-methyl-3-(trifluoromethoxy)pyridine
3-Chloro-2-(difluoromethyl)-6-nitro-5-(trifluoromethoxy)pyridine
3-Cyano-2-(difluoromethyl)-5-methyl-4-(trifluoromethoxy)pyridine
3-Chloro-2-(difluoromethyl)-5-nitro-4-(trifluoromethoxy)pyridine