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. 2021 Nov 15;13(11):1725–1740. doi: 10.4251/wjgo.v13.i11.1725

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©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/Licenses/by-nc/4.0/

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Finger-print of Shuyu pills. The finger-print of Shuyu pills was determined by high resolution mass spectrometry. A: The 20 pharmaceutical ingredients were labeled according to the chromatographic retention time and their structures were analyzed by mass spectrometry; B: Chemical structure formulae of 20 compounds. Chemical structures and formulae of 20 compounds from PubChem (https://pubchem.ncbi.nlm.nih.gov/), numbered according to the compounds information in Table 1.