2-ethyl 7,9-dimethyl 3-nitro-4,5-dioxo-4,5-dihydro-1H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylate

2-ethyl 7,9-dimethyl 3-diazo-4,5-dioxo-4,5-dihydro-3H-pyrrolo[2,3-f]quinoline-2,7,9-tricarboxylate

6-氨基-5-甲氧基吲哚-2-甲酸乙酯

乙基6-甲酰氨基-5-甲氧基吲哚-2-羧酸酯