5-26-13-00110 (Beilstein Handbook Reference) 70879-28-6 71195-58-9 ALFENTANIL Alfentanilum [INN-Latin] Alfentanyl BRN 1188293 DEA No. 9737 HSDB 6789 N-(1-(2-(4-Ethyl-4,5-dihydro-5-oxotetrazolyl)ethyl)-4-(methoxymethyl)-4-piperidyl)-N-phenylpropionamid N-(1-(2-(4-Ethyl-4,5-dihydro-5-oxotetrazolyl)ethyl)-4-(methoxymethyl)-4-piperidyl)propionanilid N-(1-(2-(4-Ethyl-5-oxo-2-tetrazolin-1-yl)ethyl)-4-(methoxymethyl)-4-piperidyl)propionanilide Propanamide, N-(1-(2-(4-ethyl-4,5-dihydro-5-oxo-1H-tetrazol-1-yl)ethyl)-4-(methoxymethyl)-4-piperidinyl)-N-phenyl-