A novel low molecular compound which was effective to heart is isolated from the venom of the spider through two times reverse phase high performance liquid chromatography . its exact molecular weight is 147da determined by esi mass spectrum 采用两次反相高效液相色谱从虎纹捕鸟蛛中分离出一种相对分子质量为147da的成分,命名为hwtxs - 。