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