Carfentanil N1-oxide
Methyl 1-oxo-1-(2-phenylethyl)-4-[phenyl(propanoyl)amino]-1λ5-piperidine-4-carboxylate
 8365  C24H30N2O4  410.506
 Fentanyl
 InChI=1S/C24H30N2O4/c1-3-22(27)25(21-12-8-5-9-13-21)24(23(28)30-2)15-18-26(29,19-16-24)17-14-20-10-6-4-7-11-20/h4-13H,3,14-19H2,1-2H3
 BFWPIZNHSVFOSV-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(C1(CCN(=O)(CC1)CCc1ccccc1)C(=O)OC)c1ccccc1