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. 2019 Oct 21;19:274. doi: 10.1186/s12906-019-2688-0

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 1 — High-performance liquid chromatography (HPLC) chromatograms of ethanol extracts of Chrysanthemum zawadskii Herbich (ECZ) and the chemical structures of three markers. For ECZ, the markers were identified at wavelengths of (a) 320 and (b) 365 nm by using HPLC and a diode array UV/Vis detector. c The chemical structures of three markers of ECZ. (1) chlorogenic acid, (2) 3,5-di-caffeoylquinic acid, and (3) luteolin