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