4-Cyano-2-fluoro-6-(trifluoromethoxy)pyridine-3-sulfonamide
4-Chloro-2-(chloromethyl)-5-fluoro-3-(trifluoromethoxy)pyridine
3-Cyano-5-fluoro-6-(trifluoromethoxy)pyridine-2-sulfonamide
3-Chloro-5-(chloromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine
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