Ethyl 5-bromo-2-nitropyridine-4-acetate
Ethyl 4-bromo-5-nitropyridine-2-acetate
2-(4-Bromo-2-nitropyridin-6-yl)-2-hydroxyacetic acid
2-(4-Bromo-2-nitropyridin-3-yl)-2-hydroxyacetic acid
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