The molecule is the beta,gamma-unsaturated ketone resulting from the hydrolysis of the methyl enol ether group of thebaine. It is a key intermediate in the biosynthesis of codeine and morphine in the opium poppy, Papaver somniferum. It is a morphinane alkaloid and an organic heteropentacyclic compound. It is a conjugate base of a neopinone(1+). It derives from a hydride of a morphinan.
(4R,7aR,12bS)-9-methoxy-3-methyl-1,2,4,6,7a,13-hexahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-one