β-Methylfentanyl
N-Phenyl-N-[1-(2-phenylpropyl)piperidin-4-yl]propanamide
 3187 C23H30N2O 350.497
 Fentanyl
 InChI=1S/C23H30N2O/c1-3-23(26)25(21-12-8-5-9-13-21)22-14-16-24(17-15-22)18-19(2)20-10-6-4-7-11-20/h4-13,19,22H,3,14-18H2,1-2H3
 UXIGUKSHASXDNI-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCC(=O)N(c1ccccc1)C1CCN(CC1)CC(c1ccccc1)C