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