Ethyl 4-cyano-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-2-acetate
Ethyl 4-cyano-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-6-acetate
Methyl 5-fluoro-3-methoxy-4-(trifluoromethoxy)pyridine-2-acetate
Ethyl 4-fluoro-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-carboxylate