ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] The Upper Barremian sample has an organic carbon content of 9% and was Soxhlet extracted with toluene/methanol (1/3, v/v; 20 h). The hexane-soluble part of the extract was separated by column chromatography over silica/alumina using hexane, toluene and toluene/methanol (1/1, v/v). The saturated ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/296059a0