Table 1: Glycyrrhizin and 15 flavonoids, their electrospray ionization mass and ultraviolet spectra data.

Comp no.Name /minMS/MS dataUV spectrum

1Liquiritigenin; 4′-O-glucopyranyl-(1-2)-glucopyranoside58010.4489, 417, 255F
2Sophoraflavone B41614.2415, 253C
3Liquiritin apioside55015.5549, 417, 295, 255F
4Liquiritigenin; 7,4′-O-diglucopyranoside58015.8417, 255F
5Liquiritin41816.2255, 135, 119F
66′′-O-a-hydroxypropynoylliquiritin49018.4417, 399, 327, 255, 135F
7IsoLiquiritin apioside55019.6549, 429, 417, 357, 327, 297, 255 D
8Isoliquiritin41820.7297, 255, 135, 119D
9Kumatakenin B25421.8253C
10Medicarpin-3-O-glucoside43223.5477, 431, 311, 269G
11Liquiritigenin25624.3255, 153, 135, 119F
12Isoliquiritigenin25630.9255, 153, 135, 119D
13Formononetin26831.7267, 252 B
14Glycyrrhizin82232.4803, 777, 645, 627, 351A
15Neoglycyrol36641.0365, 350, 307, 295E
16Isoglycyrol36645.0365, 350E