TABLE 1

Structure of isoflavones and their retention time (Rt, min) on a reverse-phase HPLC column

Compound
R1
R2
R3
Rt
Embedded Image min
Genistein OH OH OH 25
Daidzein OH H OH 19
Biochanin A OH OH OCH3 31
Formononetin OH H OCH3 28
Prunetin OCH3 OH OH 30
DMIF
OCH3
H
OCH3
32.5