Synonyms: 2H-10,4a-Iminoethanophenanthren-3(4H)-one,1,9,10,10a-tetrahydro-5-hydroxy-6-methoxy-11-methyl- (5CI); Morphinan,4-hydroxy-3-methoxy-N-methyl-6-oxo- (7CI); Thebainone, dihydro- (6CI);(-)-Dihydrothebainone; 7,8-Dihydrothebainone; 7,8-Dihydrothebainone A;Dihydrothebainone; Dihydrothebainone A; NSC 134598; NSC 35545