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3-Indoleglyoxylic acid

Indole-2-carboxylic acid

Indole-6-carboxylic acid

3-Indoleformic acid

Indole-5-carboxylic acid

1H-Indole-7-carboxylic acid

Indole-4-carboxylic acid

Indole-7-carboxaldehyde

Indole-6-carboxaldehyde

Indole-4-carboxaldehyde

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