Exploring p-Fluoro-remifentanil ethyl ester. To explore a different substance…

p-Fluoro-remifentanil ethyl ester
Methyl 1-(3-ethoxy-3-oxopropyl)-4-[(4-fluorophenyl)(propanoyl)amino]piperidine-4-carboxylate
 1699  C21H29FN2O5  408.464
 Fentanyl
 InChI=1S/C21H29FN2O5/c1-4-18(25)24(17-8-6-16(22)7-9-17)21(20(27)28-3)11-14-23(15-12-21)13-10-19(26)29-5-2/h6-9H,4-5,10-15H2,1-3H3
 ASWVHLIRIKUHLW-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 CCOC(=O)CCN1CCC(CC1)(C(=O)OC)N(c1ccc(cc1)F)C(=O)CC