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Chromatographic separation of the fraction F16 (CM50) by the method proposed by Huo et al. [114], using the Zorbax® Eclipse XDB C18 column. Signals detected at 210 nm: Peak 1—igalan; 2—isoalantolactone; 3—alantolactone; 4—a mixture of dugesialactone and alloalantolactone.
