2-(Perfluorophenyl)-5-(trifluoromethyl)pyridine-4-acetonitrile
2-(Perfluorophenyl)-5-(trifluoromethyl)pyridine-3-acetonitrile
2-(Perfluorophenyl)-4-(trifluoromethyl)pyridine-3-acetonitrile
2-(Perfluorophenyl)-3-(trifluoromethyl)pyridine-4-acetonitrile