| n-(1-phenethyl-4-piperidyl)-propionanilid |
| 1-phenethyl-4-(n-phenylpropionamido)piperidine |
| 1-phenethyl-4-n-propionylanilinopiperidine |
| fentanest |
| fentanil |
| fentanila |
| fentanyl |
| fentanylum |
| leptanal |
| n-(1-phenethyl-4-piperidinyl)-n-phenylpropionamide |
| n-(1-phenethyl-4-piperidyl)propionanilide |
| n-phenethyl-4-(n-propionylanilino)piperidine |
| n-phenyl-n-[1-(2-phenylethyl)-4-piperidinyl]propanamide |
| pentanyl |
| phentanyl |
| n-phenyl-n-(1-(2-phenylethyl)-4-piperidinyl)-propanamid |
| r 4263 |
| sentonil |
