Figure 4.

Comparison of four identified spectra found in extracts of Orthosiphon stamineus with that of the standards: (a) rosmarinic acid standard spectra overlay with rosmarinic acid found in ET, EW and water extracts of Orthosiphon stamineus, (b) 3′hydroxy-5,6,7,4′tetramethoxyflavon standard spectra overlay with 3′hydroxy-5,6,7,4′tetramethoxyflavon found in ET, EW and W extracts of Orthosiphon stamineus, (c) sinensitin standard spectra overlay with sinensitin found in ET, EW and water extracts of Orthosiphon stamineus, and (d) eupatorin standard spectra overlay with eupatorin found in ET, EW, and W extracts of Orthosiphon stamineus