英文名称:Tryptophan Ep Impurity B (Mixture Of Diastereomers); Tryptophan Impurity 2(Tryptophan Ep Impurity B); 1H-Indole-3-Propanoic Acid, Α-Amino-2,3-Dihydro-3-Hydroxy-2-Oxo-, (Αs)-; Tryptophan Ep Impurity B; Tryptophan Impurity B (Mixture Of Diastereomers); Dioxindolyl-L-Alanine; A-Amino-2,3-Dihydro-3-Hydroxy-2-Oxo-1H-Indole-3-Propanoic Acid; Dioxindolyl-L-Alanine (Mixture Of Diastereomers); Dioxindolyl-L-alanine