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1-Methyl-1h-pyrrolo[3,2-c]pyridine-3-carboxylic acid

1-Methyl-1h-pyrrolo[3,2-b]pyridine-3-carboxylic acid

1-Methyl-1h-pyrrolo[2,3-c]pyridine-3-carboxylic acid

1-Ethyl-1h-pyrrolo[3,2-c]pyridine-3-carboxylic acid

1-Ethyl-1h-pyrrolo[3,2-b]pyridine-3-carboxylic acid

1-Ethyl-1h-pyrrolo[2,3-c]pyridine-3-carboxylic acid

1,4-Dimethyl-1h-indole-3-carboxylic acid

1,5-Dimethyl-1h-indole-3-carboxylic acid

1,6-Dimethyl-1h-indole-3-carboxylic acid

1-Ethyl-5-methyl-1h-indole-3-carboxylic acid