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