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| Coumarins 1,2-Benzopyrones | 1,2 Benzopyrones Synthetic or naturally occurring substances related to coumarin, the delta-lactone of coumarinic acid. Coumarin itself occurs in the Tonka bean. The various coumarins have a wide range of proposed actions and uses including as anticoagulants, pharmaceutical aids, indicators and reagents, photoreactive substances, and antineoplastic agents. | |
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