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