Synonyms: Eudesma-1,4-dien-12-oicacid, 2-chloro-6a-hydroxy-3-oxo-,g-lactone, (11S)- (8CI);Naphtho[1,2-b]furan-2,8(3H,4H)-dione,7-chloro-3a,5,5a,9b-tetrahydro-3,5a,9-trimethyl-, [3S-(3a,3aa,5ab,9bb)]-; Santonin, 2-chloro- (6CI);NSC 125344; a-Chlorosantonin