10-oxomorphine, a decomposition product of morphine.
D055598:Chemical Phenomena; D002621:Chemistry; D004091:Hydromorphone / Q000031:analogs & derivatives*; D009020:Morphine / Q000032:analysis*; D010111:Oxymorphone / Q000032:analysis*
D009020:Morphine; D010111:Oxymorphone; D004091:Hydromorphone