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