Thiofentanyl
Thienylfentanyl is an anilide resulting from the formal condensation of the aryl amino group of N-phenyl-1-[2-(2-thienyl)ethyl]piperidin-4-amine with propanoic acid. It has a role as an opioid analgesic. It is a member of piperidines, a member of thiophenes and an anilide.