Methyl 1-[2-(2-oxo-2,3-dihydro-1H-indol-1-yl)ethyl]-4-[phenyl(propanoyl)amino]piperidine-4-carboxylate
 1628 ·  C26H31N3O4 ·  449.542
 Fentanyl
 InChI=1S/C26H31N3O4/c1-3-23(30)29(21-10-5-4-6-11-21)26(25(32)33-2)13-15-27(16-14-26)17-18-28-22-12-8-7-9-20(22)19-24(28)31/h4-12H,3,13-19H2,1-2H3
 SSKYVFQDOKANDP-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(C1(CCN(CC1)CCN1C(=O)Cc2c1cccc2)C(=O)OC)c1ccccc1