For reference substance, ursolic acid (110742-201622), citric acid (111679-201602), chlorogenic-acid (110753-201716), geniposide (110749-201718), luteolin 7-O-β-d-glucopyranoside (111968-201602), rutin (100080-201409), quercetin (100081-201610), kaempferol (110861-201611), hesperidin (110721-201617) were purchased from the National Institutes for Food and Drug Control (Beijing, China). Scandoside (20170503), alizarin 1-methyl ether (20170608) were purchased from Nanjing DASF Biotechnology Co., Ltd. (Nanjing, China). Scandoside methyl ester (20171001), 5,6,7,4′-tetramethoxyflavone (20171011), geniposidic acid (20171024) were purchased from Sichuan Weikeqi Biotechnology Co., Ltd. (Chengdu, China). 6-Methoxy-8-methylcoumarin (16018), sanlengdiphenyllactone (15025) were provided by the Research Center of Natural Drugs, School of Pharmaceutical Sciences, Jilin University, China.