3-Hydroxytyramine hydrochloride4-(2-Aminoethyl)-1,2-benzenediol hydrochloride羟酪胺 盐酸盐Dopamine hydrochloride多巴胺 盐酸盐3,4-Dihydroxyphenethylamine hydrochloride3,4-二羟基苯乙胺 盐酸盐4-(2-氨乙基)-1,2-苯二醇 盐酸盐2-(3,4-二羟基苯基)乙胺 盐酸盐2-(3,4-Dihydroxyphenyl)ethylamine hydrochloride