6-Chloro-3-nitro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
2-Cyano-4-methyl-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
3-Cyano-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetonitrile
5-Cyano-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-6-acetonitrile