4-Hydroxy-3-methoxy-5-(trifluoromethoxy)pyridine-2-sulfonyl chloride
4-Hydroxy-2-nitro-6-(trifluoromethoxy)pyridine-3-sulfonamide
2-(Aminomethyl)-3-hydroxy-4-methyl-6-(trifluoromethoxy)pyridine
5-Fluoro-4-nitro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride