McCaffrey M.A.; Lipton P.A.; Moldowan Michael J.; Summons R.E.; Peters K.E.; Jeganathan A.; Watt D.S.
(1994)
Petroleums and bitumens from Early Proterozoic (≈ 1800 Ma) to Miocene (≈ 15 Ma) age marine strata contain 24-isopropylcholestanes, a novel group of C30 steroids. The abundance of these compounds, relative to 24-n-propylc ...