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