1-(2-PHENYLETHYL)-4-(N-(2-PYRAZYL)-2-FUROYLAMIDO) PIPERIDINE HYDROCHLORIDE 119413-53-5 2-Furancarboxamide, N-(1-(2-phenylethyl)-4-piperidinyl)-N-pyrazinyl-, monohydrochloride A-3508 hydrochloride Mirfentanil hydrochloride Mirfentanil hydrochloride [USAN] N-(1-(2-Phenylethyl)-4-piperidinyl)-N-pyrazinyl-2-furancarboxamide monohydrochloride N-(1-Phenethyl-4-piperidinyl)-N-(2-pyrazinyl)furan-2-carboxamide hydrochloride N-(1-Phenylethyl-4-piperidyl)-N-pyrazinyl-2-furamide monohydrochloride