单词 | sterane |
释义 | steranen. Mineralogy and Chemistry. Any of a class of saturated hydrocarbons with a steroid structure which are found in crude oils and derived from the sterols of ancient organisms. Originally: †the compound whose molecule consists of the saturated nucleus only. ΘΚΠ the world > the earth > minerals > types of mineral > hydrocarbon minerals > [noun] > other hydrocarbon minerals dysodyle1809 paper coal1833 idrialite1849 kœnleinite1861 kerogen1906 thucholite1928 sterane1951 the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > cyclic hydrocarbons > others heveëne1838 menthene1838 carotene1861 stilbene1868 mesityl1879 naphthene1884 tetramethylene1885 hexamethylene1887 pentamethylene1887 irene1894 pregnane1932 adamantane1933 aldrin1949 sterane1951 norbornane1952 1951 Jrnl. Chem. Soc. 3527 The substance (II) shall be named gonane (preferred) or sterane (alternative). 1969 Geochim. et Cosmochim. Acta XXXIII. 1307 The C27, C28 and C29 steranes are present in the bitumen from the Green River oil shale and..they were derived from cholesterol, ergosterol, stigmasterol or related sterols. 1973 Nature 27 Apr. 603/1 These steranes and terpanes represent the complete reduction of naturally occurring steroids or terpenoids to relatively stable fossil molecules which preserve intact the complete molecular skeleton and stereochemistry of their precursors. Steranes..provided convincing proof for the biological origins of petroleums. This entry has not yet been fully updated (first published 1986; most recently modified version published online March 2019). < |
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