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