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