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