Methyldihydromorphinum [inn-latin]

4,5α-Epoxy-6,17-dimethylmorphinan-3,6α-diol

4,5alpha-Epoxy-6,N-dimethyl-3,6-morphinandiol

(6S)-6,17-Dimethyl-4,5α-epoxymorphinan-3,6-diol