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