| 摘要 |
<p>The compounds of this invention are lanthanide chelates comprising three heterocyclic rings covalently coupled to each other (either one 2,6-pyridylene and two five-membered unsaturated heterocyclic ring moieties or two 2,6-pyridylene and one five-membered unsaturated heterocyclic ring moiety) and two chelating groups so seated that they together chelate the same lanthanide ion even in aqueous solutions. Optionally these lanthanide chelates also contain a reactive group for coupling to biologically active molecules. The new chelates of our invention find applications in those areas that are classical for lanthanide chelates. Moreover, these compounds are useful as probes in time-resolved fluorescence microscopy, cytometry, multilabelling techniques and process controls in industry.</p> |
