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Characterization of the spent medium extract and portoamide mixture samples. (A) 1H NMR (CD3OD, 400 MHz) profiles of the spent medium extract and purified portoamides A and B mixture. (B) Extracted ion chromatograms (EICs) for portoamides obtained from LC-HRESIMS analyses of the spent medium extract (top) and portoamides A and B mixture (bottom) – the intensity scale is the same for EICs obtained from the same sample.
