2-Cyano-4-hydroxy-5-(trifluoromethoxy)pyridine-3-sulfonamide
Methyl 4-cyano-3-hydroxy-2-(trifluoromethoxy)pyridine-5-acetate
4-Cyano-5-hydroxy-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride
Methyl 4-cyano-6-hydroxy-3-(trifluoromethoxy)pyridine-2-acetate