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