6,7-dimethoxy-4-[(6-nitro-3-pyridyl)oxy]quinoline

4-(6-chloropyridin-3-yl)oxy-6,7-dimethoxyquinoline

6-Chloro-5-(6,7-dimethoxyquinolin-4-yloxy)pyridin-2-ylamine

5-氟-2-硝基吡啶