4-氟-3-吲哚乙酸

4-氯吲哚-3-乙酸

4-溴-(9ci)-1H-吲哚-3-乙酸

methyl 3-(cyanomethyl)-4-iodoindole-1-carboxylate

methyl 4-amino-3-(cyanomethyl)indole-1-carboxylate