The molecular formula C18H27NO2 may refer to: * Alifedrine, a partial beta-adrenergic agonist * Caramiphen, an anticholinergic drug * Dyclonine, an over-the-counter local anesthetic * S33005, a serotonin–norepinephrine reuptake inhibitor This set index page lists chemical structure articles associated with the same molecular formula.If an internal link led you here, you may wish to change the link to point directly to the intended article.