Methyl 3-bromo-5-chloro-4-(trifluoromethoxy)pyridine-2-acetate
Methyl 4-bromo-6-chloro-2-(trifluoromethoxy)pyridine-3-acetate
Methyl 4-bromo-6-chloro-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 4-bromo-2-chloro-3-(trifluoromethoxy)pyridine-6-acetate