药理:(S)-O-Desmethyl Venlafaxine N-Oxide is a N-oxyde of (S)-O-Desmethyl Venlafaxine. O-Desmethyl Venlafaxine is an active metabolite of Venlafaxine[1]. Venlafaxine is an antidepressant of the serotonin-norepinephrine reuptake inhibitor (SNRI) class[2].