2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-1,3-dicarboxylic acid

H-MET-TRP-OH

1-(furan-2-yl)-9H-pyrido[3,4-b]indole-3-carboxylic acid

1-(2-呋喃基)-吡啶并(3,4-b)吲哚

N-(4-氯苯甲酰)-L-色氨酸