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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 1.

Figure 1

The different types of flavonoids/chalcones in licorice with their partial structures as well as their HMBC cross peaks expressed as δH, δC in ppm and as barcodes (δH 11.8–14.3 ppm, δC 80–180 ppm), gleaned from both literature and experimental data.