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