Ethyl 5-bromo-4-(chloromethyl)-3-(difluoromethyl)pyridine-2-acetate
Methyl 4-bromo-3-(difluoromethyl)-6-(trifluoromethyl)pyridine-2-acetate
Methyl 4-bromo-3-(difluoromethyl)-5-(trifluoromethyl)pyridine-2-acetate
Methyl 4-bromo-3-(difluoromethyl)-2-(trifluoromethyl)pyridine-5-acetate