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(organic chemistry)
C9H6O2 The anhydride of o-coumaric acid; a toxic, white, crystalline lactone found in many plants and made synthetically; used in making perfume and soap. Also known as 1,2-benzopyrone.



a lactone of o-coumarinic acid; colorless crystals with an odor of new-mown hay. Melting point, 70°C; boiling point, 291°C. It has the following structural formula:

Coumarin is readily soluble in alcohol and ether and poorly soluble in water. It occurs in glucoside form in many plant species, for example, in sweet clover and sweet grass. Coumarin is industrially prepared from salicylic aldehyde and acetic anhydride. It serves as an odor-enhancing substance in the tobacco and perfume industries.

References in periodicals archive ?
Gallic, chlorogenic, and coumaric acids in fresh pepper were identified in addition to catechin and resveratrol; however, the later was not detected in pickled pepper.
Chlorogenic acid, caffeic acid, syrigin, procyanidins B2, (-)-epicatechin, cinnamic acid, coumaric acid, phloridzin and quercetin were purchased from Sigma-Aldrich (USA).
22) This component of the varietal aroma of Gewurztraminer is likely due to an unusually high quantity of ferulic and coumaric acids present in the juice of this variety.
Persimmon peel contains, the phenolics including; p- coumaric, gallic acid, protocatechuic, proanthocyanidins and tannins including catechin, epicatechin, epigallocatechin, catechin-gallate, gallocatechin and gallocatechin-gallate [7, 14, 15, 16].
Garlic contains lots of phytochemicals, such as allicin, saponin and coumaric acid," adds Zied.
Simultaneous determination of quercetin, rutin and coumaric acid in flowers of Rhododandrum arboreum by HPTLC.
Coumaric and caffeic acids are the starting substances
oxysporumdid produce chemicals materials as organic acids, especially phenolic acids such as cinnamic, vanillic, coumaric, and ferulic acid [6].
Kaempferol and coumaric acid moieties were detected in the ethyl acetate layer.