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