2-Cyano-5-iodo-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
3-Cyano-6-hydroxy-2-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
4-Cyano-2-hydroxy-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine
3-Cyano-5-hydroxy-2-(trifluoromethoxy)-4-(trifluoromethyl)pyridine