3-Fluoro-4-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine
4-Hydroxy-6-iodo-2-(trifluoromethoxy)pyridine-3-acetic acid
3-Cyano-4-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-acetic acid
3-(Aminomethyl)-6-cyano-2-(trifluoromethoxy)pyridine-5-acetic acid