2-[[4-[[2-amino-5-(carboxymethyl)-4-oxo-1,6,7,8-tetrahydropteridin-6-yl]methylamino]benzoyl]amino]pentanedioic acid

N-hydroxy-N-(4-methylphenyl)formamide

ethyl 4-[formyl(hydroxy)amino]benzoate

5,5-二甲基-1,3-二恶烷-2-羧酸

二羟基酒石酸