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