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The high-resolution UPLC-MS/MS result of ethanol extract of marine brown alga S. horneri. (A) Mass chromatogram of the ethanol extract at negative ion mode. (B) High-resolution mass spectrum of 4 sulfoglycolipid compounds at retention times 17.37, 18.27, 20.39 and 21.39 min. (C) Tandem mass spectrum of each of the 4 sulfoglycolipid compounds (m/z 527.2522, 553.2678, 555.5834 and 581.2989).
