A polyphenol with diverse biological activities; inhibits histamine release from anti-EA IgE antibody-sensitized rat peritoneal mast cells from 0.1 to 1 mg/ml; reduces proliferation of MDA-MB-231 breast cancer cells (IC50 = 22 μg/ml) and HUVECs; inhibits human placental aromatase activity (IC50 = 15 μM); lytic against T. cruzi amastigotes (MBC50 = 0.12 pM); decreases RAW 264.7 osteoclastogenesis at 20 μM