3-Hydroxy-2-methoxy-6-(trifluoromethoxy)pyridine-4-sulfonamide
2-Fluoro-3-iodo-5-(trifluoromethoxy)pyridine-4-sulfonyl chloride
3-Hydroxy-2-methoxy-4-(trifluoromethoxy)pyridine-6-sulfonamide
2-Hydroxy-6-methoxy-5-(trifluoromethoxy)pyridine-3-sulfonamide