4-(2-(Methylpropylamino)ethyl)pyrocatechol hydrochloride 57464-69-4 N-Methyl-N-n-propyl-beta-(3,4-dihydroxy-phenyl)ethylamine hydrochloride N-Methyl-N-propyldopamine hydrochloride Pyrocatechol, 4-(2-(methylpropylamino)ethyl)-, hydrochloride