Patent ID: 7807394

Claim:
A compound consisting of the formula I: wherein: X is a (C 1 -C 10 )alkylenyl, unsubstituted or substituted with 1, 2, 3 or 4 X 1 ; each X 1 is independently selected from the group consisting of hydroxyl, thiol, amino, alkyl, alkoxy, thioalkyl and halo; Y is a triazolyl of the formula: Z is an (C 1 -C 10 )alkylenyl group wherein one of the carbon atoms of the (C 1 -C 10 )alkylenyl group is optionally replaced by a group selected from —CO—, —CONR″, —NR″CO—, —NR″—, —O— and —S—, and wherein the (C 1 -C 10 )alkylenyl group is unsubstituted or substituted with 1, 2, 3 or 4 X 1 ; A is a radioactive isotope; and R″ is H or is selected from the group consisting of (C 1 -C 6 )alkyl, —CO(C 1 -C 3 )alkyl, —CONH(C 1 -C 3 )alkyl and —CO 2 (C 1 -C 3 )alkyl.