铁钉莱为褐藻门铁丁菜科铁钉莱Ishigeoka－muraiYendo的全藻，俗称铁钉、破网、海首。具有清热解毒，软坚散结，驱烟等作用，民间有揭碎后加调味品拌食习惯。主要分布于日本、朝鲜及我国的东海和南海。迄今未见对其化学成分进行系统分高鉴定的报道。我们对其石油酸可溶部分及乙 Iron nail Lai is the whole algae of Lao Ishigeoka-murai Yendo, which is called the nail, broken net and sea head. It has the functions of clearing away heat, detoxifying, dissolving hard, dispelling smoke, etc., and the public has added the habit of seasoning and mixing food after uncovering. Mainly distributed in Japan, North Korea and China’s East China Sea and South China Sea. No report has been made so far on the systematic identification of chemical components. We are on its petroleum acid soluble part and B