Ethyl 4-fluoro-2-hydroxy-6-(trifluoromethoxy)pyridine-3-acetate
3-Fluoro-5-hydroxy-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
2-Fluoro-6-hydroxy-3-(trifluoromethoxy)pyridine-5-sulfonyl chloride
2-Fluoro-5-hydroxy-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride