3-甲氧基甲基吲哚

methyl 2-hydroxy-2-(3-methyl-1H-indol-2-yl)propanoate

methyl 3-methyl-1,1-dioxo-2,1λ⁶-benzoxathiole-3-carboxylate

1-(benzenesulfonyl)indole-3-carbonitrile