The present invention provides a novel ferrocene compound; a reagent containing the compound; a high-sensitivity method of measuring a vitamin D compound using the reagent; etc. Specifically, a ferrocene compound represented by the following formula (1):
is reacted with a vitamin D compound and the combined compound of these compounds is subjected to LC/ESI-MS/MS. Thus, the VD compound can be measured with higher sensitivity than in conventional techniques. The ferrocene compound of the present invention is extremely useful as a derivatization agent when a VD compound is measured by LC/ESI-MS/MS. The obtained compound wherein the ferrocene compound and the VD compound have been combined with each other, is useful as, e.g., a labeled compound, when the VD compound is measured by LC/ESI-MS/MS.
本发明提供了一种新型的
二茂铁化合物;含有该化合物的试剂;使用该试剂进行高灵敏度测量
维生素D化合物的方法等。具体地,将下式(1)所表示的
二茂铁化合物与
维生素D化合物反应,将这些化合物的复合物经过LC/ESI-MS/MS处理。因此,相比传统技术,VD化合物的灵敏度可以更高地测量。本发明的
二茂铁化合物在使用LC/ESI-MS/MS测量VD化合物时作为
衍生化试剂极其有用。得到的化合物,其中
二茂铁化合物和VD化合物已经相互结合,当使用LC/ESI-MS/MS测量VD化合物时,可以作为标记化合物使用。