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