Figure 4From: Identification of light-independent inhibition of human immunodeficiency virus-1 infection through bioguided fractionation of Hypericum perforatumGC analysis of bioactive fractions from H. perforatum. Total ion chromatograms of subfraction E4.7 (a) and expanded view at retention time 29 min (b), and subfractions derived from additional purification, E4.7c (c), E4.7d (d), and E4.7f (e). Peaks whose chemical identity was established by comparing their retention times and mass spectra to authentic standards (see Figure 5) are: palmitic acid (1), 3-hydroxy myristic acid (2), 3-hydroxy palmitic acid (3), and 3-hydroxy lauric acid (4).Back to article page