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HPLC-UV/DAD chromatogram of (a) standard solution mixture and (b) ethanolic extracts of C. nutans leaves, λ = 330 nm. C. nutans samples L1: Taiping, Perak, L2: Kota Tinggi, Johor, and L3: Sendayan, Negeri Sembilan. (1) Shaftoside, (2) isoorientin, (3) orientin, (4) vitexin, and (5) isovitexin, a–f. Unknown.
