Also known as (5alpha)-7,8-Didehydro-4,5-epoxy-3-methoxy-17-methylmorphinan-6-one
Codeinone is an isoquinolone alkaloid found in the opium poppy. As an analgesic, it is one-third the potency of codeine. It is an important intermediate in the production of hydrocodone–a painkiller about three-quarters the potency of morphine–as well as of oxycodone, though the latter can also be synthesized from thebaine.
via PubChem
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).