The invention relates to complexing agents of formula (I):
in which Ra, Chrom
1
, Chrom
2
and Chrom
3
are as defined in the description. The invention also relates to lanthanide complexes obtained from these complexing agents. The invention can be used for labelling biological molecules.
该发明涉及式(I)的络合剂,其中Ra、Chrom1、Chrom2和Chrom3如描述中所定义。该发明还涉及从这些络合剂获得的
镧系
金属络合物。该发明可用于标记
生物分子。