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HPLC-UV chromatogram of ethanol extract of E. angustifolium Miller root
HPLC-UV: High-performance liquid chromatography-ultraviolet, AS: Acetylshikonin, S: Shikonin, DS: Deoxyshikonin, DMAS: β, β-dimethylacryshikonin, IVS: Isovalerylshikonin, MBS: 2-methyl butrylshikonin
