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