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