2-Cyano-6-hydroxy-4-(trifluoromethoxy)pyridine-3-sulfonamide
5-Chloro-2-cyano-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
4-Chloro-2-(chloromethyl)-5-(trifluoromethoxy)pyridine-3-acetic acid
3-Chloro-6-iodo-4-methoxy-2-(trifluoromethoxy)pyridine