tetraterpene


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tetraterpene

[¦te·trə′tər‚pēn]
(organic chemistry)
A class of terpene compounds that contain isoprene units; best known are the carotenoid pigments from plants and animals, such as lycopene, the red coloring matter in tomatoes.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Depending on the number of blocks, they can be classified as monoterpenes (C10), sesquiterpenes (C15), diterpenes (C20), triterpenes (C30), tetraterpenes (C40), and polyterpenes [21].
Terpenoids are classified to hemi-terpenes (C5), monoterpenes (C10), sesquiterpenes (C15), diterpenes (C20), triterpenes (C30), and tetraterpenes (C40) [25].
They occur as di (C20), tri (C30), and tetraterpenes (C40), as well as hemi (C5) and sesquiterpenes (C15).