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UPL of HDT sample solution (A) and mixed standard solution (B). (1,psoralenoside; 2, isopsoralenoside; 3, hyperoside; 4, quercetin-3-O-glucuronide; 5,isoquercitrin; 6, sennoside B; 7, astragaline; 8, sennoside A; 9, rosmarinic acid; 10, lithospermic acid; 11, salvianolic acid B; 12, nuciferine; 13, salvianolic acid A; 14.psoralen; 15, isopsoralen; 16, salvianolic acid C; 17, rhein; 18, neobavaisoflavone; 19, corylin; 20, cryptotanshinone; 21, bakuchiol).
