4″-Hydroxycarfentanil
Methyl 1-[2-(4-hydroxyphenyl)ethyl]-4-[phenyl(propanoyl)amino]piperidine-4-carboxylate
 8364  C24H30N2O4  410.506
 Fentanyl
 InChI=1S/C24H30N2O4/c1-3-22(28)26(20-7-5-4-6-8-20)24(23(29)30-2)14-17-25(18-15-24)16-13-19-9-11-21(27)12-10-19/h4-12,27H,3,13-18H2,1-2H3
 UFQKEDUATOWSAR-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 COC(=O)C1(CCN(CC1)CCc1ccc(cc1)O)N(c1ccccc1)C(=O)CC