What does cumarin mean?
Cumarin (more commonly spelled coumarin) is a naturally occurring organic compound prized for its sweet, warm scent reminiscent of vanilla, newly mown hay, and bitter almond. It is found in tonka beans, sweet clover, cassia cinnamon, and various grasses, and has long been valued by perfumers for fixing and enriching fragrances. First isolated in the early nineteenth century, it became one of the earliest synthetic fragrance materials produced on an industrial scale. Beyond perfumery, cumarin holds an important place in medical history: research into its structure and the bleeding disorder it caused in cattle led to the development of warfarin, still a widely prescribed anticoagulant. Because cumarin itself can be toxic to the liver in high doses, many countries restrict its use as a direct food additive, though trace amounts occur naturally in familiar foods such as cinnamon.
nounA fragrant organic compound found naturally in tonka beans, sweet clover, cassia cinnamon, and other plants, used chiefly in perfumery and as a precursor to anticoagulant drugs; also spelled 'coumarin'.
- A white crystalline heterocyclic organic compound with a sweet, vanilla- and hay-like odor, occurring naturally in tonka beans, sweet grasses, and some spices.
- A flavoring and perfumery ingredient, now restricted as a direct food additive in several countries including the United States because of liver toxicity concerns at high doses.
"The perfume's sweet, hay-like note comes from cumarin extracted from tonka beans."
"Chemists first isolated cumarin from tonka beans in the early nineteenth century."
"Because cumarin can damage the liver in high doses, regulators restrict its use as a direct food additive."
Rarely pluralized; when plural forms appear in chemical literature they typically refer collectively to substituted derivatives of the compound (the coumarins).
"Several natural cumarins were isolated from the plant extract."
The smell of fresh-cut hay is largely cumarin — a compound so useful that its derivatives gave medicine warfarin, the blood thinner named after the Wisconsin Alumni Research Foundation.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cumarin
Cumarin takes its name from 'cumaru', the Portuguese rendering of an indigenous South American name for the tonka bean tree (Dipteryx odorata), from whose seeds the compound was first isolated around 1820. The standard spelling 'coumarin' derives via French 'coumarine' from the same source. The word thus reflects the colonial-era exchange between European chemistry and Amazonian botanical knowledge.
How cumarin is actually used
'Cumarin' is a spelling variant; 'coumarin' is the standard modern form in chemistry and regulatory literature. The word is technical, appearing mainly in perfumery, food science, and pharmacology rather than everyday speech. It should not be confused with the anticoagulant drug warfarin, although warfarin was derived from related compounds discovered through investigations of sweet-clover bleeding disease in livestock.
Easily confused with cumarin
Curcumin is the yellow pigment compound of turmeric, whereas cumarin is the sweet-smelling compound of tonka beans and sweet clover.
Coumadin is a brand name for the anticoagulant warfarin, which was developed from compounds related to cumarin, not from cumarin itself.