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