DPI-3290 was discovered by scientists at Burroughs Wellcome and licensed to Delta Pharmaceutical and is a drug that is used in scientific research. It is a potent analgesic drug, which produces little respiratory depression. DPI-3290 acts as an agonist at both μ- and δ-opioid receptor, with an IC50 of 6.2nM at μ and 1.0nM at δ. See also BW373U86 DPI-221 DPI-287 References Synthetic opioids Delta-opioid receptor agonists Piperazines Benzanilides Phenols Fluoroarenes Allyl compounds Mu-opioid receptor agonists