4-Fluoro-3-(fluoromethyl)-5-(trifluoromethoxy)pyridine-2-carboxylic acid
2-Chloro-3-iodo-5-(trifluoromethoxy)pyridine-4-carboxylic acid
2-Bromo-3-chloro-4-cyano-5-(difluoromethyl)pyridine
2-Chloro-5-(difluoromethyl)-4-fluoropyridine
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