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