Methyl 2-chloro-6-(difluoromethyl)pyridine-4-carboxylate
Ethyl 3-chloro-5-(difluoromethyl)pyridine-4-carboxylate
Methyl 2-chloro-5-(difluoromethyl)pyridine-4-carboxylate
4-Chloro-2-(difluoromethyl)pyridine-5-carboxylic acid
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