Cholestane

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Cholestane
Cholestane.svg
Steroid-nomenclature.svg
IUPAC numbering[1]
Names
IUPAC name
(8R,9S,10S,13R,14S,17R)-10,13-Dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.006.876
Properties
C27H48
Molar mass 372.68 g·mol−1
Density 0.911 g/ml
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Cholestane is a saturated 27-carbon tetracyclic triterpene. Cholestane, along with ergostane and stigmastane are used as biomarkers for early eukaryotic life[2]. High abundance of cholestane relative to the others has been interpreted as the presence of rhodophytes[3].

Derivatives of cholestane[edit]

Derivatives are classified in two families:

Some steroids, such as cholesterol, are both a sterol and a cholestene.

See also[edit]

References[edit]

  1. ^ The Nomenclature of Steroids, IUPAC
  2. ^ Brocks, Jochen J.; Jarrett, Amber J. M.; Sirantoine, Eva; Hallmann, Christian; Hoshino, Yosuke; Liyanage, Tharika. "The rise of algae in Cryogenian oceans and the emergence of animals". Nature. 548 (7669): 578–581. doi:10.1038/nature23457.
  3. ^ Summons, Roger E; Brassell, Simon C; Eglinton, Geoffrey; Evans, Evan; Horodyski, Robert J; Robinson, Neil; Ward, David M. "Distinctive hydrocarbon biomarkers from fossiliferous sediment of the Late Proterozoic Walcott Member, Chuar Group, Grand Canyon, Arizona". Geochimica et Cosmochimica Acta. 52 (11): 2625–2637. doi:10.1016/0016-7037(88)90031-2.

External links[edit]