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7-Chloro-6-hydroxy-5-quinoxalinecarboxylic acid

Methyl 7-chloro-6-methoxyquinoxaline-5-carboxylate

8-Bromo-6-hydroxy-5-quinoxalinecarboxylic acid

Methyl 8-bromo-6-methoxyquinoxaline-5-carboxylate

6-Hydroxy-2-methyl-5-quinoxalinecarboxylic acid

Methyl 2-amino-4-bromo-6-methoxy-3-nitrobenzoate

Methyl 2,3-diamino-5-bromo-6-methoxybenzoate

6-Hydroxy-2,3-dimethyl-5-quinoxalinecarboxylic acid

Methyl 6-methoxy-2,3-dimethylquinoxaline-5-carboxylate

7-Bromo-6-hydroxy-5-quinoxalinecarboxylic acid

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