【中文名称】:葫芦素B
【中文别名】:葫芦苦素B
【英文名称】:Cucurbitacin B
【英文别名】:19-Nor-9.beta.,10.alpha.-lanosta-5,23-diene-3,11,22-trione, 9-methyl-2.beta.,16.alpha.,20,25-tetrahydroxy-, 25-acetate
【CAS登录号】:6199-67-3
【分子式】: C32H46O8
【分子量】:558.71
【检测方法及纯度】:HPLC≥85%
【来源】:Lagenaria siceraria var.depressa,瓜蒂Cucumis melo,丝瓜Luffa cylindrica,黄瓜Cucumissativus,药西瓜Citrullus colocynthis,喷瓜Ecballium elaterium,白泻根Bryonia alba,非洲黄瓜Cucumis aficanus,伞形屈曲花Iberis umbellata,栝楼Trichosanthes kirilowii,羊角拗子Strophanthus divaricatus
【性状】:白色装干粉
【贮藏方法】:-4°C,避光干燥保存
【注意事项】:本品应在避光干燥低温处保存.避免受潮及阳光照射导致产品降解
【含量测定方法】:采用Hypersil C18色谱柱,以乙腈-0.05mol.L-1K2HPO4(40∶60)为流动相,波长228 nm下检测。
物理化学性质
熔点:184-186 DEG C
沸点:699.3°C at 760 mmHg
折射率:1.568
闪光点:218.7°C
密度:1.23g/cm
葫芦素BCAS号:6199-67-3
葫芦素B分子式: C32H46O8
葫芦素B英文名称: Cucurbitacin B
葫芦素B英文同义词: (2S,4R,9beta,16alpha)-2,16,20-trihydroxy-9,10,14-trimethyl-1,11,22-trioxo-4,9-cyclo-9,10-secocholesta-5,23-dien-25-yl acetate; (2S,4R,9beta,16alpha,23E)-2,16,20-trihydroxy-9,10,14-trimethyl-1,11,22-trioxo-4,9-cyclo-9,10-secocholesta-5,23-dien-25-yl acetate; (23E)-2,16,20-trihydroxy-9,10,14-trimethyl-1,11,22-trioxo-4,9-cyclo-9,10-secocholesta-5,23-dien-25-yl acetate; (2S,4R,9beta,16alpha,17xi,23E)-2,16,20-trihydroxy-9,10,14-trimethyl-1,11,22-trioxo-4,9-cyclo-9,10-secocholesta-5,23-dien-25-yl acetate
葫芦素B分子量: 558.7028
葫芦素B沸点: 699.3°C at 760 mmHg
葫芦素B密度: 1.3E-22mmHg at 25°C
葫芦素B闪点: 218.7°C