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