5-Amino-4-bromo-2-(difluoromethyl)-3-nitropyridine
3-Amino-4-bromo-5-(difluoromethyl)-2-nitropyridine
3-Amino-4-(difluoromethyl)-2,6-diiodopyridine
3-Amino-2-bromo-6-(difluoromethyl)-5-nitropyridine
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