Synonyms: Eudesma-1,4-dien-12-oicacid, 6a-hydroxy-3-oxo-, g-lactone, (11S)- (8CI);Naphtho[1,2-b]furan-2,8(3H,4H)-dione, 3a,5,5a,9b-tetrahydro-3,5a,9-trimethyl-,[3S-(3a,3aa,5ab,9bb)]-; (-)-Santonin; (-)-a-Santonin;1,2,3,4,4a,7-Hexahydro-1-hydroxy-a,4a,8-trimethyl-7-oxo-2-naphthaleneacetic acid g-lactone; NSC 4900; Santonin; Semenen; a-Santonin