4-Bromo-3-(difluoromethyl)-2-nitropyridine-6-carboxylic acid
4-Bromo-6-(difluoromethyl)-3-nitropyridine-2-carboxylic acid
2-Chloro-5-cyano-4-(difluoromethyl)-3-iodopyridine
4-Bromo-2-(difluoromethyl)-3-nitropyridine-6-carboxylic acid
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