2-Cyano-6-nitro-3-(trifluoromethoxy)pyridine-4-carboxylic acid
4-Chloro-3-iodo-2-(trifluoromethoxy)pyridine-6-sulfonamide
6-Cyano-3-nitro-4-(trifluoromethoxy)pyridine-2-carboxylic acid
4-Chloro-2-iodo-6-(trifluoromethoxy)pyridine-3-sulfonamide
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