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