4-Hydroxy-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetonitrile
3-Hydroxy-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-acetonitrile
2-(Fluoromethyl)-5-hydroxy-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine
3-Hydroxy-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetonitrile