Butein (2′,3,4,4′-tetrahydroxychalcone) is a chalcone and a flavonoid, that is produced in plants. It is a plant polyphenol and a bioactive constituent, that is extracted from the heartwood of
Dalbergia odorifera,
Caragana jubata and
Rhus verniciflua stokes, and the stem bark of cashews (
Semecarpus anacardium).
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