Figure 2From: Chemical markers for the quality control of herbal medicines: an overviewHPLC chromatograms of gamboges (A) and its adulterant (B). 1, Morellic acid; 2, R-30-hydroxygambogic acid; 3, S-30-hydroxygambogic acid; 4, Gambogenic acid; 5, R-isogambogic acid; 6, S-isogambogic acid; 7, R-gambogic acid; 8, S-gambogic acid.Back to article page