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