(+)-sesamin is a lignan that consists of tetrahydro-1H,3H-furo[3,4-c]furan substituted by 1,3-benzodioxole groups at positions 1 and 4 (the 1S,3aR,4S,6aR stereoisomer). Isolated from Cinnamomum camphora, it exhibits cytotoxic activity. It has a role as an antineoplastic agent, a neuroprotective agent and a plant metabolite. It is a lignan, a member of benzodioxoles and a furofuran.