Selective inhibitor of erastin induced ferroptosis (EC50 = 60 nM). Specifically inhibits Ras selective lethal compound -induced death, but not cell death induced by other oxidative lethal compounds and apoptosis-inducing agents. Inhibits ferroptosis in cancer cells; also inhibits glutamate-induced cell death in organotypic rat brain slices. Prevents erastin induced accumulation of cytosolic and lipid reactive oxygen species. Purity 98%. MW (observed): 262.35