申请人:Syva Company
公开号:US03966744A1
公开(公告)日:1976-06-29
Compounds are provided for use in assays of organic compounds, where organic compounds of biological interest are determined at extremely low concentrations by combining in a medium, the composition to be determined, hereinafter referred to as ligand, a high molecular weight material of at least 10,000 molecular weight, which has a site spatially characteristic of the ligand, hereinafter referred to as receptor, and an analog of the ligand having a free radical functionality, hereinafter referred to as "ligand analog". The ligand analog and ligand in the medium compete for the receptor site, the amount of ligand analog bound to the receptor, being dependent on the amount of ligand present in the medium. By following the change in electron spin resonance spectrum of the ligand analog and comparing it to the change in spectrum which would be obtained in the absence of any ligand, the amount of ligand can be determined.
提供用于有机化合物测定的化合物,其中生物学感兴趣的有机化合物通过将待测组成物(以下简称为配体)、至少具有10,000分子量的高分子量材料(其具有与配体空间特性相对应的位点,以下简称为受体)以及具有自由基官能团的配体类似物(以下简称为“配体类似物”)结合在介质中,以极低浓度确定。配体类似物和介质中的配体竞争受体位点,配体类似物结合到受体的量取决于介质中存在的配体量。通过跟踪配体类似物的电子自旋共振谱的变化,并将其与在没有任何配体的情况下获得的谱变化进行比较,可以确定配体的量。