Patent ID: 7767796

Claim:
A technetium complex of Formula (I): where: X is —NR—, —CO 2 —, —CO—, —NR(C═S)—, —NR(C═O)—, —CONR— or a Q group; each Y is independently a D- or L-amino acid, —CH 2 —, —CH 2 OCH 2 — or —OCH 2 CH 2 O— or an X group; Z is a synthetic biological targeting moiety; n is an integer of value 1 to 8; m is an integer of value 0 to 30; R is H, C 1-4 alkyl, C 2-4 alkoxyalkyl, C 1-4 hydroxyalkyl, or C 1-4 fluoroalkyl; Q is A is a counterion; with the proviso that the X—(Y) m chain of atoms lacks bonds in which one heteroatom is directly bonded to another.