3-Cyano-2-(fluoromethyl)-6-nitro-4-(trifluoromethoxy)pyridine
4-Cyano-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-acetic acid
3-Cyano-2-(fluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine
4-Cyano-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetic acid