dpi-3290 dpi-3290 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-3290identifiers iupac name 3--(3-hydroxyphenyl)methyl]-n-(3-fluorophenyl)-n-methylbenzamide cas number182417-73-8 npubchem cid9826770chemspider8002513 nuniir3uo4y068schemblchembl155892 nchemical and physical dataformulac30h34fn3o2molar mass487.619 g·mol−13d model (jsmol)interactive image smiles c1cn((cn1(c2=cc(=cc=c2)o)c3=cc=cc(=c3)c(=o)n(c)c4=cc(=cc=c4)f)c)cc=c inchi inchi=1s/c30h34fn3o2/c1-5-15-33-19-22(3)34(20-21(33)2)29(24-10-7-14-28(35)17-24)23-9-6-11-25(16-23)30(36)32(4)27-13-8-12-26(31)18-27/h5-14,16-18,21-22,29,35h,1,15,19-20h2,2-4h3/t21-,22+,29-/m1/s1 nkey:lzxrqliimyjzda-uetogoevsa-n n ny (what is this?) (verify) 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.