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