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