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. Author manuscript; available in PMC: 2021 Apr 7.
Published in final edited form as: Anal Chem. 2020 Mar 26;92(7):4954–4962. doi: 10.1021/acs.analchem.9b05084

Figure 3.

Figure 3.

Chemical shifts of the LFR 5-/2’-OH hydrogens of the three main types of Glycyrrhiza flavonoids/chalcones based on literature and experimental data (A) and chemical shifts and structures of three model compounds, Y1, Y2, and Y3 (B).