2-Amino-3-(difluoromethyl)-4-nitropyridine-5-carboxylic acid
5-Amino-3-(difluoromethyl)-4-nitropyridine-2-carboxylic acid
3-Amino-5-(difluoromethyl)-4-iodo-2-(trifluoromethyl)pyridine
3-Amino-5-(difluoromethyl)-2-nitropyridine-4-carboxylic acid
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