A short-acting opioid anesthetic and analgesic derivative of FENTANYL. It produces an early peak analgesic effect and fast recovery of consciousness. Alfentanil is effective as an anesthetic during surgery, for supplementation of analgesia during surgical procedures, and as an analgesic for critically ill patients.

Synonyms: Limifen, Fanaxal, R 39209, Alfentanil Hydrochloride, Alfentanyl, Rapifen, R-39209, 1N74HM2BS7, 0, 11S92G0TIW, R39209, Alfentanil, Propanamide, N-(1-(2-(4-ethyl-4,5-dihydro-5-oxo-1H-tetrazol-1-yl)ethyl)-4-(methoxymethyl)-4-piperidinyl)-N-phenyl-, Alfenta