Methyl 4-(bromomethyl)-5-chloro-3-(trifluoromethoxy)pyridine-2-acetate
Methyl 4-(bromomethyl)-2-chloro-3-(trifluoromethoxy)pyridine-5-acetate
Methyl 3-(bromomethyl)-5-chloro-6-(trifluoromethoxy)pyridine-2-acetate
Methyl 4-(bromomethyl)-3-chloro-2-(trifluoromethoxy)pyridine-6-acetate