3-Chloro-2-(difluoromethyl)pyridine-6-carboxylic acid
3-Chloro-2-(difluoromethyl)pyridine-4-carboxylic acid
3-Chloro-2-(difluoromethyl)pyridine-5-carboxylic acid
6-Chloro-3-(difluoromethyl)pyridine-2-carboxylic acid
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