Butyryl-norfentanyl
N-Phenyl-N-(piperidin-4-yl)butanamide
 8487  C15H22N2O  246.348
 Fentanyl
 InChI=1S/C15H22N2O/c1-2-6-15(18)17(13-7-4-3-5-8-13)14-9-11-16-12-10-14/h3-5,7-8,14,16H,2,6,9-12H2,1H3
 GOXLPDTZAWMNTG-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCCC(=O)N(c1ccccc1)C1CCNCC1