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