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