2-Fluoro-6-iodo-4-(trifluoromethoxy)pyridine-3-acetic acid
2-Fluoro-4-iodo-5-(trifluoromethoxy)pyridine-3-acetic acid
4-Cyano-6-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-acetic acid
3-Cyano-5-(fluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetic acid