The purpose of the presented work is to synthesize 99Tcm-labeled dopamin D2 receptor imaging agent 2-{1-[(1-Ethoxycarbonyl-2-mercapto-ethylamino)-methyl]}-3-{4-[(1 -ethyl pyrrolidin-2-ylmethyl)-carbamoyl]-3- methoxy-5-bromo-phenylamino}-propylamino)-3-mercapto-propionic acid ethyl ester (99Tcm-m-Br-p-EBZM). The ECD was coupled with the benzamide derivative