4-Fluoro-5-hydroxy-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
3-Fluoro-2-hydroxy-4-(trifluoromethoxy)pyridine-5-acetonitrile
4-Fluoro-3-hydroxy-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride
6-Fluoro-2-hydroxy-4-(trifluoromethoxy)pyridine-3-acetonitrile