p-Chloro-acrylfentanyl
N-(4-Chlorophenyl)-N-[1-(2-phenylethyl)piperidin-4-yl]prop-2-enamide
 3934  C22H25ClN2O  368.9
 Fentanyl
 InChI=1S/C22H25ClN2O/c1-2-22(26)25(20-10-8-19(23)9-11-20)21-13-16-24(17-14-21)15-12-18-6-4-3-5-7-18/h2-11,21H,1,12-17H2
 CSFZVPAQJHDOCD-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 C=CC(=O)N(c1ccc(cc1)Cl)C1CCN(CC1)CCc1ccccc1