C18H25N

The molecular formula C18H25N (molar mass: 255.40 g/mol, exact mass: 255.1987 u) may refer to:


 * Dimemorfan, or 3,17-dimethylmorphinan, a cough suppressant of the morphinan family
 * Volazocine, an opioid analgesic of the benzomorphan class which was never marketed