| 摘要 |
PCT No. PCT/CA93/00153 Sec. 371 Date Dec. 21, 1994 Sec. 102(e) Date Dec. 21, 1994 PCT Filed Apr. 6, 1993 PCT Pub. No. WO93/20054 PCT Pub. Date Oct. 14, 1993Fluorogenic chelators for Eu3+ and Tb3+ are provided, they form highly fluorescent complexes with Eu3+ and Tb3+. In all cases, the fluorescence observed was lanthanide-specific, long-lived and it was monitored by microsecond time-resolved fluorometry. The fluorogenic chelators could be quantified, in the presence of excess lanthanide, at levels<10-8 mol/L. Fluorogenic chelators can form ternary complexes with Eu3+ and Tb3+, in the presence of EDTA. The structures of the identified chelators is such that enzyme substrates can be used for enzyme-labelled time-resolved fluorometric immunoassays.
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