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