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