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