3-Hydroxy-2-methoxy-5-(trifluoromethoxy)pyridine-6-acetonitrile
6-Hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonamide
3-Hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine-5-acetonitrile
6-Hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine-3-acetonitrile