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