Methyl 3-fluoro-2-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-5-acetate
Methyl 2-cyano-4-(fluoromethyl)-3-(trifluoromethoxy)pyridine-6-acetate
Methyl 2-fluoro-5-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-3-acetate
3-Cyano-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetic acid