27-Norcholestane

27-Norcholestane
Names
	IUPAC name 27-Nor-5ξ-cholestane
	Systematic IUPAC name (1R,3aS,3bR,5aΞ,9aS,9bS,11aR)-1-[(2S)-Heptan-2-yl]-9a,11a-dimethylhexadecahydro-1H-cyclopenta[a]phenanthrene
Identifiers
CAS Number	352557-10-9;
3D model (JSmol)	Interactive image;
ChemSpider	65791227;
PubChem CID	53954564;
	InChI InChI=1S/C26H46/c1-5-6-7-10-19(2)22-14-15-23-21-13-12-20-11-8-9-17-25(20,3)24(21)16-18-26(22,23)4/h19-24H,5-18H2,1-4H3/t19-,20?,21+,22-,23+,24+,25+,26-/m1/s1; Key: JGTJUUFDASCIKN-LBSJJPSCSA-N;
	SMILES CCCCC[C@@H](C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CCC4[C@@]3(CCCC4)C)C;
Properties
Chemical formula	C26H46
Molar mass	358.654 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

27-Norcholestane, is a chemical compound with the formula C
₂₆H
₄₆, that is a steroid derivative. 27-Norcholestane is used as a biomarker to constrain the source age of sediments and petroleum through the ratio between 24-norcholestane and 27-norcholestane (norcholestane ratio, NCR), especially when used with other age diagnostic biomarkers, like oleanane.^[1]

References

^ Holba, A. G.; Dzou, L. I. P.; Masterson, W. D.; Hughes, W. B.; Huizinga, B. J.; Singletary, M. S.; Moldowan, J. M.; Mello, M. R.; Tegelaar, E. (1998-11-01). "Application of 24-norcholestanes for constraining source age of petroleum". Organic Geochemistry. 29 (5): 1269–1283. Bibcode:1998OrGeo..29.1269H. doi:10.1016/S0146-6380(98)00184-3. ISSN 0146-6380.

[:0-1] Holba, A. G.; Dzou, L. I. P.; Masterson, W. D.; Hughes, W. B.; Huizinga, B. J.; Singletary, M. S.; Moldowan, J. M.; Mello, M. R.; Tegelaar, E. (1998-11-01). "Application of 24-norcholestanes for constraining source age of petroleum". Organic Geochemistry. 29 (5): 1269–1283. Bibcode:1998OrGeo..29.1269H. doi:10.1016/S0146-6380(98)00184-3. ISSN 0146-6380.

[1]

See also

References