(-)-N-((S)-Tetrahydrofurfuryl)noroxymorphone hydrochloride 62767-48-0 Morphinan-6-one, 4,5-epoxy-3,14-dihydroxy-17-((tetrahydro-2-furanyl)methyl)-, hydrochloride, (5-alpha,17(S))- Mr 2097-CL