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