2-Amino-6-(difluoromethyl)-3-nitropyridine-4-carboxylic acid
5-Amino-4-(difluoromethyl)-2-iodopyridine-3-methanol
6-Amino-3-(difluoromethyl)-4-nitropyridine-2-carboxylic acid
3-Amino-5-(difluoromethyl)-6-nitropyridine-2-carboxylic acid
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