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