Evidence-Based Complementary and Alternative Medicine / 2015 / Article / Fig 2

Research Article

Effects of a Proprietary Standardized Orthosiphon stamineus Ethanolic Leaf Extract on Enhancing Memory in Sprague Dawley Rats Possibly via Blockade of Adenosine A2A Receptors

Figure 2

HPLC chromatograms of reference standard compounds. The identified peaks are ombuin (3,3′,5-trihydroxy-4′,7-dimethoxyflavone), 3′-hydroxy-4′,5,6,7-tetramethoxyflavone, sinensetin, orthosiphol B, orthosiphol A, staminol A, and orthosiphonone A.

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