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