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