Fentanyl
Fentanyl is a monocarboxylic acid amide resulting from the formal condensation of the aryl amino group of N-phenyl-1-(2-phenylethyl)piperidin-4-amine with propanoic acid. It has a role as an opioid analgesic, a mu-opioid receptor agonist, an anaesthesia adjuvant, an intravenous anaesthetic, an adjuvant and an anaesthetic. It is a member of piperidines, an anilide and a monocarboxylic acid amide.