Skip to main content
. 2020 May 27;9(6):461. doi: 10.3390/antiox9060461

Table 3.

Values of bond dissociation enthalpies [kcal/mol].

Flavonoid Bond Dissociation Enthalpy
C2’ C3’ C4’ C5’ C3 C5 C7
Flavones Acacetin 102.1 91.1
Apigenin 89.3 100.5 91.7
Chrysin 102.1 92.8
Chrysoeriol 87.0 106.7 91.6
Diosmetin 87.8 106.8 92.0
Genkwanin 88.8 102.2
Luteolin 88.2 84.4 106.1 91.8
Flavonols Fisetin 83.4 85.1 86.7 90.3
Galangin 86.9 98.5 91.7
Kaempferol 86.7 85.5 98.3 90.3
Morin 93.4 88.8 84.6 99.1 91.4
Myricetin 87.5 80.7 84.4 86.1 98.3 91.0
Quercetin 87.4 81.4 85.5 98.0 90.4

The numbers in bold typeface indicate the lowest value for a given compound.