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