Ethyl 3-bromo-2-cyano-4-(difluoromethyl)pyridine-6-acetate
Ethyl 6-bromo-2-chloro-4-(difluoromethyl)pyridine-3-acetate
Ethyl 6-bromo-3-chloro-4-(difluoromethyl)pyridine-2-acetate
Ethyl 2-bromo-5-cyano-3-(difluoromethyl)pyridine-6-acetate
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