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