Chemistry:Ergostane

Ergostane

Names
IUPAC name Ergostane
Systematic IUPAC name (1R,3aS,3bR,5aΞ,9aS,9bS,11aR)-1-[(2R,5S)-5,6-Dimethylheptan-2-yl]-9a,11a-dimethylhexadecahydro-1H-cyclopenta[a]phenanthrene
Identifiers
CAS Number	25318-39-2 511-20-6 (5α)-ergostane
3D model (JSmol)	Interactive image (5α)-ergostane: Interactive image
ChemSpider	144332 (5α)-ergostane
PubChem CID	6857535 164641 (5α)-ergostane
UNII	Y0XC723P4C (5α)-ergostane Y
InChI InChI=1S/C28H50/c1-19(2)20(3)10-11-21(4)24-14-15-25-23-13-12-22-9-7-8-17-27(22,5)26(23)16-18-28(24,25)6/h19-26H,7-18H2,1-6H3/t20-,21+,22+,23-,24+,25-,26-,27-,28+/m0/s1 Key: WAAWMJYYKITCGF-WTPIMUJOSA-N InChI=1S/C28H50/c1-19(2)20(3)10-11-21(4)24-14-15-25-23-13-12-22-9-7-8-17-27(22,5)26(23)16-18-28(24,25)6/h19-26H,7-18H2,1-6H3/t20-,21+,22?,23-,24+,25-,26-,27-,28+/m0/s1 Key: WAAWMJYYKITCGF-ADGVWNIHSA-N
SMILES C[C@H](CC[C@H](C)C(C)C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4[C@@]3(CCCC4)C)C (5α)-ergostane: C[C@H](CC[C@H](C)C(C)C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC[C@@H]4[C@@]3(CCCC4)C)C
Properties
Chemical formula	C28H50
Molar mass	386.708 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Tracking categories (test):

• SizeSet

Ergostane is a tetracyclic triterpene, also known as 24S-methylcholestane. The compound itself has no known uses; however various functionalized analogues are produced by plants and animals. The most important of these are the heavily derivatised withanolides. However simpler forms do exist, such as the sterane campestane (24R-methylcholestane). Along with cholestane and stigmastane, this sterane is used as a biomarker for early eukaryotes.

See also

• Cholane
• Cholestane
• Lanostane