24-norcholestane is found in Monterey shale, extracted from the Neogene Gulf of
California. It is a saturated hydrocarbon with a steroid backbone. The compound has been used as a
biomarker, to constrain the age of geological samples. Their biological
precursors are unknown, although there is evidence to support that their abundance
increased with diatom evolution. Norcholestane is also used as a possible
biomarker of ozone exposure, and found in a dinitrophenylhydrazine (DNPH)
derivative.
Lab name:
Common molecules
Sample provider:
Obtained courtesy of the Cambridge Structural Database
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