Abstract
IN recent studies on the origin of petroleum much emphasis has been laid on the structural relationship between compounds occurring in petroleum and their possible natural precursors. A series of compounds, now well known as the isoprenoid isoalkanes, has received much attention, partly because of their sometimes strikingly high concentrations, partly because of their possible relationship to phytol. The members of the 2,6,10-trimethyl- and 2,6,10,14-tetramethylalkane series with 14 (ref. 1), 15 (ref. 1), 16 (ref. 2), 18 (ref. 2), 19 (ref. 3), 20 (ref. 4), and 21 (ref. 2) carbon atoms have been reported. The member of the 2,6,10-trimethylalkane series with seventeen carbon atoms proved either to be absent or to occur at best in only very small amounts5.
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GÖHRING, K., SCHENCK, P. & ENGELHARDT, E. A New Series of Isoprenoid Isoalkanes in Crude Oils and Cretaceous Bituminous Shales. Nature 215, 503–505 (1967). https://doi.org/10.1038/215503a0
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DOI: https://doi.org/10.1038/215503a0
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