Thus the present invention describes novel compounds comprising 1-10 targeting moieties; a chelator (Ch); and 0-1 linking groups (Ln) between the targeting moiety and chelator; wherein the targeting moiety is a matrix metalloproteinase inhibitor; and wherein the chelator is capable of conjugating to a cytotoxic radioisotope. The present invention also provides novel compositions of the compounds of the invention, kits and their uses in treatment of diseases associated with MMPs.