2-Cyano-3-methyl-6-(trifluoromethoxy)pyridine-4-sulfonyl chloride
6-Chloro-4-nitro-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride
4-Cyano-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-2-acetonitrile
2-Cyano-3-methyl-4-(trifluoromethoxy)pyridine-6-sulfonyl chloride