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