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