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