2-Bromo-6-(difluoromethyl)-5-nitropyridine-3-acetic acid
2-Bromo-6-(difluoromethyl)-4-nitropyridine-3-acetic acid
2-Bromo-6-(difluoromethyl)-3-nitropyridine-4-acetic acid
6-Bromo-3-(difluoromethyl)-2-nitropyridine-4-acetic acid
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