thebaine

Morphine, codeine, and thebaine, which represent one type, act upon the central nervous system and are analgesic, narcotic, and potentially addicting compounds. Papaverine, noscapine (formerly called narcotine), and most of the other opium alkaloids act only to relax involuntary (smooth) muscles.

…effects that is derived from thebaine, an alkaloid that occurs naturally in the opium poppy (Papaver somniferum). Oxycodone was synthesized from thebaine in 1916 and was first used clinically the following year. Today it is prescribed for moderate to severe pain and is sold under various brand names, including OxyContin,…