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