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The use of chromatographic assays to assess the residual complexity of materials that are purified from natural sources by chromatographic means is, in a sense, a case of the fox watching the henhouse. Beside their static residual complexity, which is intrinsic to their metabolic origin, biologically active natural materials can also be involved in chemical reactions that lead to dynamic residual complexity. The present study examines the dynamics of the hop prenylphenol, desmethylxanthohumoldoi:10.1055/s-0028-1112209 pmid:19145555 pmcid:PMC2760692 fatcat:wihobk3fjjeabhnmcgxv7sdzou