| abstract |
A 99m Tc complex which contains the moiety Tc═NR, Tc—N═NY or Tc(—N═NY) 2 , and as a synthetic organic ligand which confers biological target-seeking properties on the technetium complex, n where: n R is an aryl group, a substituted or unsubstituted n alkyl group or the group —NR 1 R 2 ; n Y is an aryl group or a substituted or unsubstituted alkyl group; n R 1 and R 2 are H, aryl groups or substituted or unsubstituted aliphatic or cyclic alkyl groups, and are the same or different provided that both are not hydrogen; n where at least one of the R or Y groups comprises an aryl group which chelates the 99m Tc. |