brifentanil hydrochloride

Known as: A-3331.HCl, Acetamide, N-(1-(2-(4-ethyl-4,5-dihydro-5-oxo-1H-tetrazol-1-yl)ethyl)-3-methyl-4-piperidinyl)-N-(2-fluorophenyl)-2-methoxy-, monohydrochloride, cis-(+-)-

National Institutes of Health