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