4-Amino-5-(chloromethyl)-2-(difluoromethyl)-3-nitropyridine
2-Amino-6-(bromomethyl)-4-(difluoromethyl)-3-nitropyridine
4-Amino-3-(chloromethyl)-5-(difluoromethyl)-2-nitropyridine
2-Amino-5-(bromomethyl)-6-(difluoromethyl)-3-nitropyridine
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