β-Hydroxy-carfentanil
Methyl 1-(2-hydroxy-2-phenylethyl)-4-[phenyl(propanoyl)amino]piperidine-4-carboxylate
 3100 ·  C24H30N2O4 ·  410.506
 Fentanyl
 InChI=1S/C24H30N2O4/c1-3-22(28)26(20-12-8-5-9-13-20)24(23(29)30-2)14-16-25(17-15-24)18-21(27)19-10-6-4-7-11-19/h4-13,21,27H,3,14-18H2,1-2H3
 RFXVYDZQLYCDNJ-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(C1(CCN(CC1)CC(c1ccccc1)O)C(=O)OC)c1ccccc1