N-benzenesulphonyl-1-oxo-1,2,3,4-tetrahydrocarbazole

2-吲哚甲酸

吲哚-2-羧酸甲酯

2-(1-oxo-2,3,4,9-tetrahydro-1H-4a,9a-epiminocarbazol-10-yl)isoindoline-1,3-dione

8-methoxy-1,2,3,4-tetrahydro-9H-carbazol-1-one