Synonyms: DL-SERINE 2-[(2,3,4-TRIHYDROXYPHENYL)METHYL]HYDRAZIDE HCL;DL-SERINE 2[(2,3,4-TRIHYDROXYPHENYL)-METHYL] HYDRAZIDE HYDROCHLORIDE;RO 4-4602;Benzaerazide Hcl;Benserazide HCL;2-amino-3-hydroxy-N'-(2,3,4-trihydroxybenzyl)propanehydrazide hydrochloride (1:1) (non-preferred name);2-amino-2-hydroxy-N'-(2,3,4-trihydroxybenzyl)acetohydrazide hydrochloride (1:1)