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