ethyl 3-(1-methylindol-2-yl)prop-2-enoate

2-(5-ethoxy-3,4-dihydro-2H-pyrrol-3-yl)-1-methylindole

dimethyl 2-[(1-methylindol-2-yl)methyl]propanedioate

9-methyl-4-(1-methylindol-2-yl)carbazole

9-methylcarbazole-4-carboxylic acid