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