4-Hydroxy-3-nitro-2-(trifluoromethoxy)pyridine-6-carboxylic acid
4-Hydroxy-5-methoxy-3-(trifluoromethoxy)pyridine-2-acetonitrile
2-(Bromomethyl)-3-fluoro-5-nitro-4-(trifluoromethoxy)pyridine
4-Hydroxy-3-methoxy-2-(trifluoromethoxy)pyridine-5-acetonitrile