2-Cyano-3-hydroxy-6-(trifluoromethoxy)pyridine-5-sulfonyl chloride
4-Chloro-5-hydroxy-3-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Cyano-4-methyl-5-(trifluoromethoxy)pyridine-2-acetonitrile
3-Chloro-5-hydroxy-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride