英文别名1-((1H-Indol-3-yl)methyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid; Tryptophan Impurity 13; Tryptophan Impurity 20; Tryptophan Impurity; 2,3,4,9-Tetrahydro-1-(1H-indol-3-ylmethyl)-1H-pyrido[3,4-b]indole-3-carboxylic Acid; 1H-Pyrido[3,4-b]indole-3-carboxylic acid, 2,3,4,9-tetrahydro-1-(1H-indol-3-ylmethyl)- 
