title: Head-to-Head Linked Isoprenoid Hydrocarbons in Petroleum.
abstract: A series of petroleum isoprenoid hydrocarbons possessing an unusual head-to-head linkage is present as an important component in petroleum. The entire series appears to be produced by diagenesis or catagenesis from precursors containing 40 carbon atoms. A suitable precursor compound has been reported in one type of living organism, thermoacidophile bacteria.
authors.forename: J M
authors.initials: JM
authors.lastname: Moldowan
authors.forename: W K
authors.initials: WK
authors.lastname: Seifert