3-羟基-1H-吲哚-2-羧酸乙酯

Ethyl 3-iodo-1H-indole-2-carboxylate

3-(4-羟基-4-氧代丁基)-1H-吲哚-2-羧酸

3-(2-羧基乙基)-1H-吲哚-2-羧酸

2-氰基吲哚