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The HPLC analysis of the extract of Coptidis Rhizoma and Glycyrrhiza uralensis. Palmatine was detected at approximately 33.001 minutes, Berberine was detected at approximately 33.775 minutes, Liquritin was detected at approximately 26.729 minutes, and Liquiritigenin was detected at approximately 34.672 minutes. HPLC: High-performance liquid chromatography.
