title: Isoprenoid Fatty acids isolated from the kerogen matrix of the green river formation (eocene).
abstract: Demineralized oil shale was oxidized with chromic acid, and C(14) to C(22) isoprenoid fatty acids were isolated and identified. The major components of the branched-chain acid fraction after successive 3-, 6-, and 15-hour oxidations are C(15) and C(16) branched-chain acids; C(17), C(19) (norphytanic acid), and C(20) (phytanic acid) were obtained in lower concentration; no C(18) product was obtained. Separations were effected by column and gas-liquid chromatography, and the structures of individual components were determined by high- and low-resolution mass spectrometry.
authors.forename: A L
authors.initials: AL
authors.lastname: Burlingame
authors.forename: B R
authors.initials: BR
authors.lastname: Simoneit