4-[(4-(((1,1-Dimethylethyl)oxidoimino)methyl)phenoxy)butyl]triphenylphosphonium bromide

MitoPBN is a nitrone antioxidant derived from IBTP, which blocks superoxide-induced lipid peroxidation in rat liver mitochondrial preparations without disrupting normal mitochondrial functions when used at concentrations that are below 25 μM. MitoPBN selectively and rapidly traps carbon-centered secondary radicals, but is unreactive towards superoxide anion (O^2-) or alkylperoxide radicals (ROO).