染料木素,主要存在于豆科之中,如槐角、山豆根中含量较大。染料木素,即金雀异黄素,本品为长方形或六边形棒状结晶(60%乙醇)、树枝状结晶(乙醚),熔点297-298℃(略微分解)。溶于DMSO和乙醇,几乎不溶于水,在水中的溶解度为8.7微克/毫升,改变溶液pH对染料木素没有明显影响。【英文别名】4',5,7-TRIHYDROXYISOFLAVONE; 5,7,4'-TRIHYDROXYISOFLAVONE; 5,7-DIHYDROXY-3-(4-HYDROXYPHENYL)-4H-1-BENZOPYRAN-4-ONE; 5,7-DIHYDROXY-3-(4-HYDROXY-PHENYL)-CHROMEN-4-ONE; AKOS NCG1-0029; 4’,5,7-trihydroxy-isoflavon; 5,7-dihydroxy-3-(4-hydroxyphenyl)-4h-1-benzopyran-4-on; c.i.75610; differenola; genistein(synthetic); genisteol; genisterin; prunetol; sophoric