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