5-Hydroxy-3-nitro-4-(trifluoromethoxy)pyridine-2-acetonitrile
3-Hydroxy-5-nitro-2-(trifluoromethoxy)pyridine-4-acetonitrile
2-(Bromomethyl)-3-hydroxy-6-(trifluoromethoxy)pyridine-4-acetic acid
5-Hydroxy-4-nitro-3-(trifluoromethoxy)pyridine-2-acetonitrile