High Quality Content by WIKIPEDIA articles! Coumarin is a chemical compound (specifically, a benzopyrone) found in many plants, notably in high concentration in the tonka bean (Dipteryx odorata), vanilla grass (Anthoxanthum odoratum), woodruff (Galium odoratum), mullein (Verbascum spp.), and sweet grass (Hierochloe odorata). The name comes from a French word, coumarou, for the tonka bean. It has a sweet scent, readily recognised as the scent of newly-mown hay, and has been used in perfumes since 1882.

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