Identification of the major constituents of Hypericum perforatum by LC/SPE/NMR and/or LC/MS

Herewith we report the use of modern hyphenated LC/SPE/NMR and LC/MS techniques in the characterization of constituents of Greek Hypericum perforatum, mainly naphtodianthrones, flavonoids and phenolic acids and two phloroglucinols (hyperfirin and adhyperfirin).