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