5-Fluoro-2-nitro-3-(trifluoromethoxy)pyridine-6-acetic acid
4-Fluoro-3-nitro-6-(trifluoromethoxy)pyridine-2-acetic acid
3-(Aminomethyl)-5-hydroxy-4-(trifluoromethoxy)pyridine-2-acetonitrile
5-(Aminomethyl)-4-hydroxy-2-(trifluoromethoxy)pyridine-3-acetonitrile