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