Cyclopentylfentanyl
N-Phenyl-N-[1-(2-phenylethyl)piperidin-4-yl]cyclopentanecarboxamide
 3071 ·  C25H32N2O ·  376.534
 Fentanyl
 InChI=1S/C25H32N2O/c28-25(22-11-7-8-12-22)27(23-13-5-2-6-14-23)24-16-19-26(20-17-24)18-15-21-9-3-1-4-10-21/h1-6,9-10,13-14,22,24H,7-8,11-12,15-20H2
 PEASFKSPITUZGT-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 O=C(N(c1ccccc1)C1CCN(CC1)CCc1ccccc1)C1CCCC1