A coumarin with anticancer activity; decreases proliferation and cell invasion induced by FBS in H1299 NSCLCs at 10 μM; decreases VEGF secretion in A549 and H1299 cells and inhibits capillary-like structure formation by HUVECs; decreases proliferation of U937 human leukemia cells (IC50 = 40 μM); reduces tumor growth in a U937 mouse xenograft model at 30 mg/kg