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