| abstract |
The invention provides a chelating compound of formula (I), wherein T is a terphenyl nucleus, EWG1 and EWG2 are electron withdrawing groups, L is a linker group and C is a coupling moiety. The two beta-diketone groups are capable of complexing a metal species. There are also provided chelates derived from the chelating compound and methods for using the chelates in immunoassays. |