4-O-Methyldopamine Hydrochloride; 5-(2-Aminoethylguaiacol Hydrochloride;5-(2-Aminoethyl)-2-methoxyphenol Hydrochloride;2-(3-Hydroxy-4-methoxyphenyl)ethanamine Hydrochloride;3-Hydroxy-4-methoxy-?-phenethylamine Hydrochloride;'3-Hydroxy-4-methoxyphenethylamine Hydrochloride