Patent ID: 8852550

Claim:
A chelator conjugate of formula: where: each R 1 , R 2 and R 3 is independently an R group; Y is —CH 2 CH 2 —X—Z where: X is —NR 4 —, —CO 2 —, —N(C═S)—, —N(C═O)—, —S— or —O—; Z is a biological targeting moiety chosen from: a 3-100 mer peptide or peptide analogue which may be a linear peptide or cyclic peptide or combinations thereof; a monoclonal antibody or fragment thereof; an enzyme substrate; an enzyme inhibitor; a synthetic receptor-binding compound; an oligonucleotide or oligo-DNA or oligo-RNA fragment; R 4 is independently an R group; each R group is independently H or C 1-10 alkyl, C 3-10 alkylaryl, C 2-10 alkoxyalkyl, C 1-10 hydroxyalkyl, C 1-10 fluoroalkyl, or 2 or more R groups, together with the atoms to which they are attached form a carbocyclic, heterocyclic, saturated or unsaturated ring and further wherein the chelator conjugate does not encompass the formula: