(2RS)-2-Amino-3-hydroxy-N′-[(2,3,4-trihydroxyphenyl)methyl]propanehydrazide Hydrochloride; 2-Amino-3-hydroxy-N'-(2,3,4-trihydroxybenzyl)propanehydrazide Hydrochloride; 2-Amino-3-hydroxy-N'-[(2,3,4-trihydroxyphenyl)methyl]propanehydrazide Hydrochloride; DL-Serine N2-(2,3,4-trihydroxybenzyl)hydrazide Hydrochloride; N-(DL-Seryl)-N'-(2,3,4-trihydroxybenzyl)hydrazine Hydrochloride; DL-Serine 2-[(2,3,4-Trihydroxyphenyl)methyl]hydrazide Hydrochloride;