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