a Schedule II of the Controlled Substances Act in the United States of America . This alkaloid is biosynthetically related to salutaridine , oripavine , morphine and reticuline . Read more... Edit at Wikipedia... Other names (5alpha)-3,6-Dimethoxy-17-methyl-6,7,8,14-tetradehydro-4,5-epoxymorphinan; (5Alpha)-6,7,8,14-tetradehydro-4,5-epoxy-3,6-dimethoxy-17-methyl-morphinan References Please add any relevant references here. Retrieved from " http://www.rsc.org/learn-chemistry/wiki/Substance:Thebaine " Navigation