6-Cyano-4-nitro-2-(trifluoromethoxy)pyridine-3-sulfonamide
6-Cyano-3-methoxy-2-methyl-4-(trifluoromethoxy)pyridine
3-Chloro-4-iodo-5-(trifluoromethoxy)pyridine-2-sulfonamide
2-Cyano-3-nitro-5-(trifluoromethoxy)pyridine-4-sulfonamide
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