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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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Main constituents of Urticae dioicae radix * Isolectin mixture (a,b) (UDA = Urtica dioica agglutinine) (0.2-0.6%) * Polysaccharides (b) (2 glucans, 2 glucogalacturonans, acidic arabinogalactan) * Sterols (c) (3-[beta]-sitosterol, hydroxy-sitosterol and their glucosides) * Scopoletin (d) (cumarin) * Dimeric phenylpropane-lignans (d) (e.g.
Main constituents identified in nettle herb (Wichtl, 2002; Anonymus, 1998) Flavonoids Glucosides and rutinosides of quercetin, kaempferol and isorhamnetin Caffeoyl-esters Caffeoylmalic acid (only Urtica dioica) Chlorogenic acid Neochlorogenic acid Caffeic acid Scopoletin (Cumarin) Sitosterol (-3-O-glucoside) Polysaccharides Fatty acids (e.g.
The occurrence of cumarins and sterols in tissue-cultures of roots of Anethum graveolens and Pimpinella anisum (author's transl).
The phytochemical analysis of the dried seed extract of fenugreek has been reported to show the presence of proteins, vitamins, flavonoids, terpenoids, carotenoids, cumarins, curcumins, lignin, saponin and plant sterol (Bukhari et al., 2008).
The presence of various secondary metabolites viz., alkaloids, quaternary alkaloids, cumarins, flavanoids, steroids / terpenoids, phenolics etc with potential anti-fungal activity were reported in various plant extracts (Alice,1984; Aswal, et al.,1984; Abraham et al., 1986; Chopra et al., 1992).
Phytochemical tests were conducted to investigate the presence of alkaloids, saponins, tannins, quinones, flavonoids, triterpenes, steroids, heterosides and cumarins. The specific qualitative tests were based on the visual observation of change in color or formation of precipitate after addition of specific reagents (MATOS, 2009).
2013), the occurrence of cumarins content in Glucevia[R], including fraxin, fraxetin, esculin, esculetin, cichoriin, scopolin and fraxidin glucoside was quantified.