Synonyms : 3-Hydroxy-N-methylmorphinan, ICN Brand of Levorphanol Tartrate, L-Dromoran, Levo-Dromoran, Levodroman, Levorphanol Tartrate, Racemorphan, 3 Hydroxy N methylmorphinan, L Dromoran, Levo Dromoran, LevoDromoran, Tartrate, Levorphanol