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