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