Synonyms: 20-Norcrotalanan-11,15-dione,14,19-dihydro-12,13-dihydroxy-, (13a,14a)-;Monocrotaline (6CI,7CI,8CI);(-)-Monocrotaline;2H-[1,6]Dioxacycloundecino[2,3,4-gh]pyrrolizine-2,6(3H)-dione,4,5,8,10,12,13,13a,13b-octahydro-4,5-dihydroxy-3,4,5-trimethyl-,[3R-(3R*,4R*,5R*,13aR*,13bR*)]-;Monocrotalin;NSC 28693;Monocrotaline;(13-alpha,14-alpha)-14,19-Dihydro-12,13-dihydroxy-20-norcrotalanan-11,15-dione;