4-Cyano-2-methyl-3-(trifluoromethoxy)pyridine-5-sulfonamide
2-Cyano-3-fluoro-5-hydroxy-6-(trifluoromethoxy)pyridine
5-Chloro-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonamide
2-(Bromomethyl)-4-cyano-3-nitro-5-(trifluoromethoxy)pyridine
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