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