3-(Fluoromethyl)-2-hydroxy-6-nitro-5-(trifluoromethoxy)pyridine
2-Hydroxy-6-nitro-3-(trifluoromethoxy)pyridine-4-acetonitrile
2-(Fluoromethyl)-3-hydroxy-6-nitro-5-(trifluoromethoxy)pyridine
4-(Chloromethyl)-3-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine