化学成分全草含摁贝素(embelin),紫金牛醌(rapainone),三十烷醇(triacontanol)及2,5-二羟基3-烷基苯醌类(3-alkylderiva-tives of 2,5-dihyroxybenzoquinone)衍生物,还含有三叶豆甙(tri-forlin),金丝桃甙(hyperin),异鼠李素-3-半乳糖甙(isorhamnetin-3-galactoside),芸香甙(rutin),槲皮素-3-鼠李糖基(1→2)半乳糖甙(quercetin-3-rhamnosyl(1→2)galactoside],异鼠李素-3-刺槐二糖甙(isorhamnetin-3-robinobioside),毛里求斯排草素(mauritianin)及两种新黄酮醇甙,即槲皮素-3-(2,6-二吡喃鼠李糖基吡喃哺半乳糖甙)[quercetin-3-(2,6-dirhamnopyranosylgalactopyranoside)]和异鼠李素-3-(2,6-二吡喃鼠李糖基吡喃半乳糖甙[isorhamnetin-3-(2,6-dirhamnopyranosylgalactopyranoside)]。,