3-Cyano-5-iodo-6-(trifluoromethoxy)pyridine-2-sulfonyl chloride
3-Cyano-2-iodo-6-(trifluoromethoxy)pyridine-4-sulfonyl chloride
6-Fluoro-3-nitro-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
6-Cyano-3-iodo-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride