(-)-6-alpha,17-Dimethyl-3-methoxymorphinan Morphinan, 6-alpha,17-dimethyl-3-methoxy-, (-)-, 2,3-dihydroxybutanedioate (1:1) QC7695800 Tartrate de (-)-methoxy-3 dimethyl-6-alpha, N morphinane (cis) [French]