The invention relates to aryl-sulphonamido compounds endowed with affinity against metallo proteases MMP, having formula (I) below wherein R, R 1 , R 2 , R 3 , G and n have the meanings reported in the specification, properly labelled with diagnostic imaging moieties or even radiotherapeutic moieties. The invention also refers to the process for their preparation, to pharmaceutical compositions comprising them and to their use as diagnostic imaging agents or radiotherapeutic agents.
