Perhydro-β-Carotene in the Green River Shale

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Science  01 Sep 1967:
Vol. 157, Issue 3792, pp. 1040-1042
DOI: 10.1126/science.157.3792.1040


Several triterpenes and the tetraterpene perhydro-β-carotene have been identified in the branched-cyclic hydrocarbon fraction of this Eocene shale. The analytical procedure included thiourea adduction followed by combined gas chromatography and mass spectrometry.