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