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