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