5-Chloro-4-methoxy-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Cyano-2-hydroxy-5-methoxy-6-(trifluoromethoxy)pyridine
2-Cyano-4-fluoro-5-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Cyano-3-fluoro-6-(trifluoromethoxy)pyridine-5-sulfonyl chloride