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