N-Phenethyl-14-ethoxymetopon is a drug that is a derivative of metopon. It is a potent analgesic, around 60 times stronger than morphine and produces significantly less constipation.
N-Phenethyl-14-ethoxymetopon acts as an agonist at both ü- and ô-opioid receptors, with a K<sub>i</sub> of 0.16 nM at ü and 3.14 nM at ô.