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