Isoflavones are polyphenolic compounds produced in Fabaceae such as soybeans. They act as phytoestrogens in mammals. They are also strong antioxidants and considered useful in treating cancer. Common isoflavones include daizin, genistin, glycitin, daidzein, genistein, and glycitein.

Jasco demonstrates, using extreme high-pressure liquid chromatography ( X-LC ), the analysis of isoflavones.