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