A flavone glycoside with diverse biological activities; scavenges DPPH radicals (IC50 = 316.21 μg/ml); decreases the cytopathic effects of parainfluenza type 3 virus in Hep-2 cells (IC50 = 11.7 μg/ml); inhibits LPS-induced barrier disruption, decreases the expression of TLR4, phosphorylated p38, and NF-κB, and decreases TNF-α production and IL-6 secretion in HUVECs at 5-40 μM; prolongs survival in a mouse model of LPS-induced lethal endotoxemia at 36 μg/animal