4-bromo-N-phenylpyridin-3-amine

4-(2-nitrophenyl)-pyridine

methyl 4a-(4-methyl-3,5-dioxo-1,2,4-triazolidin-1-yl)-3,4,4a,9-tetrahydro-2H-pyrido[3,4-b]indole-2-carboxylate

9-benzyl-9H-pyrido(3,4-b)indole

DL-色氨酸