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