Ethyl 4,6-difluoro-2-(difluoromethyl)pyridine-3-carboxylate
Ethyl 2,4-difluoro-5-(difluoromethyl)pyridine-3-carboxylate
Ethyl 5-amino-2-chloro-3-(difluoromethyl)pyridine-6-carboxylate
Ethyl 6-amino-3-(difluoromethyl)-2-iodopyridine-4-carboxylate
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