2-Cyano-5-nitro-6-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-Cyano-5-nitro-4-(trifluoromethoxy)pyridine-3-sulfonyl chloride
2-(Aminomethyl)-4-fluoro-3-hydroxy-6-(trifluoromethoxy)pyridine
6-Cyano-4-nitro-2-(trifluoromethoxy)pyridine-3-sulfonyl chloride