Synonyms: | Norfentanyl Hydrochloride;4-(N-Propionanilido)piperidine Hydrochloride;N-[Piperidin-4-yl]-N-phenylpropionaMide Hydrochloride;N-4-Piperidylpropionanilide Hydrochloride;N-Phenyl-N-(4-piperidinyl)propanaMide Hydrochloride;N-Phenyl-N-4-piperidinylpropionaMide Hydrochloride |