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