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