3-Hydroxy-6-nitro-4-(trifluoromethoxy)pyridine-2-acetonitrile
4-Hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-2-acetonitrile
5-Hydroxy-2-nitro-3-(trifluoromethoxy)pyridine-4-acetonitrile
Methyl 2-(fluoromethyl)-6-hydroxy-3-(trifluoromethoxy)pyridine-4-acetate