Bohai University Institute of Superfine Chemicals
4-hydroxycoumarin
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4-hydroxy-6,8-di-t-butylcoumarin
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4-hydroxy-8-methylcoumarin
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4-hydroxy-6-methylcoumarin
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4-hydroxy-6-methoxycoumarin
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8-tert-butyl-3-carboxycoumarin
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