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- 27-Norcholestane, is a chemical compound with formula C26H46, 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. (en)
- 27-降胆甾烷（英語：27-Norcholestane），是一种化学式为C26H46的甾烷化合物，可以作为石油中的生物标记，能通过其与24-降胆甾烷的比值（24/27-norcholestane ratio，NCR）来确定石油产生的年代。 (zh)
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- (8R,9S,10S,13R,14S,17R)-17-[(2R)-heptan-2-yl]-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene (en)
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- 2027 (xsd:nonNegativeInteger)
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- 27-Norcholestane, is a chemical compound with formula C26H46, 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. (en)
- 27-降胆甾烷（英語：27-Norcholestane），是一种化学式为C26H46的甾烷化合物，可以作为石油中的生物标记，能通过其与24-降胆甾烷的比值（24/27-norcholestane ratio，NCR）来确定石油产生的年代。 (zh)
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- 27-Norcholestane (en)
- 27-降胆甾烷 (zh)
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