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