13075-91-7 21581-37-3 4-(2-(Dimethylamino)ethyl)pyrocatechol hydrochloride N,N-Dimethyl-beta-(3,4-dihydroxyphenyl)-ethylamine hydrochloride N,N-Dimethyldopamine hydrochloride Pyrocatechol, 4-(2-(dimethylamino)ethyl)-, hydrochloride