| 21. | Coumarin was first synthesized in 1868.
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| 22. | It is an isomer of coumarin.
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| 23. | Under his later testimony he would repeatedly classify coumarin as a " lung-specific carcinogen ".
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| 24. | Chemically, it can be considered a methoxy derivative of coumarin or a methyl derivative of umbelliferone.
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| 25. | It is a derivative of coumarin, a natural product and precursor for the widely used Coumadin.
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| 26. | Tonka beans contain coumarin, a substance known to cause liver and other organ damage in test animals.
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| 27. | Levels of the blood-thinning agent coumarin in Ceylon cinnamon are much lower than those in cassia.
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| 28. | Anticoagulant effect Coumarin compounds in chamomile such as herniarin and umbelliferone may have blood-thinning properties.
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| 29. | Coumarin is still used as a legal flavorant in the tobacco industry, particularly for sweet pipe tobacco.
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| 30. | He conducted extensive research and development of dicumarol, an anti-coagulant that is produced from coumarin.
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