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  9H-Carbazole-2,7-dicarboxylic acid

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  4,4'-(Ethane-1,2-diyl)dibenzoic acid

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  3,3'-偶氮双(6-羟基苯甲酸)

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  对羧基苯基膦酸

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  LPF2

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  4',4'''-偶氮二联苯-4-羧酸

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  2-羧基-6-羧基苯基萘

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  4-[(4-羧基苯基)氨基]苯甲酸

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  萘-2,6-二甲酸

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  4,4'-(9-Oxo-9H-fluorene-2,7-diyl)bis[benzoic acid]