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