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