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Xie J, Wang W, Zhang Y, Bai Y, Yang Q. Simultaneous analysis of glycyrrhizin, paeoniflorin, quercetin, ferulic acid, liquiritin, formononetin, benzoic acid and isoliquiritigenin in the Chinese proprietary medicine Xiao Yao Wan by HPLC. Journal of Pharmaceutical and Biomedical Analysis. 2007 Nov;45(3):450–5. doi: 10.1016/j.jpba.2007.07.011. |