n 4 methoxymethyl 1 2 2 thienyl ethyl 4 piperidinyl n phenylpropanamide, n 4 methoxymethyl 1 2 2 thienyl ethyl 4 piperidyl propionanilide, sufentanil
Used as an analgesic adjunct in anesthesia and as a primary anesthetic drug in procedures requiring assisted ventilation and in the relief of pain.