Source:http://linkedlifedata.com/resource/umls/id/C0026548
MSH: Compounds based on a partially saturated iminoethanophenanthrene, which can be described as ethylimino-bridged benzo-decahydronaphthalenes. They include some of the OPIOIDS found in PAPAVER that are used as ANALGESICS.,CSP: parent substance of morphine alkaloids.