Sub Group: Standards - 13C & 2H for GC-Mass Spectrometry Catalog Number: 5376 CAS Number: 1477-68-5 Molecular Weight: 203.67 Synonyms: 3-O-Methyldopamine .HCl3-Methoxy-4-hydroxyphenethylamine hydrochloride, 3-MT, 4-(2-Aminoethyl)-2-methoxyphenol hydro