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