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