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