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