NADPH oxidase (Nox) inhibitor. Inhibits PMA-stimulated oxidative burst in HL-60 cells (IC50 = 2 μM). Inhibits oxidized-LDL-mediated, but not basal, ROS production in HUVECs in vitro. Also inhibits PDGF-mediated Nox activation and ROS formation in vascular smooth muscle cells (VSMCs) and abolishes PDGF-dependent migration of VSMCs, while having no effect on proliferation. Enhances TGF-β-induced apoptosis of liver tumor cells. Purity 98%. MW (observed): 360.39