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