b72.3 , a murine monoclonal antibody ( mab ) that reacts with 85 % of human colon carcinomas as well as other epithelial neoplasias , was labeled with 111in using four chelating agents : 1- ( p-isothiocyanatobenzyl ) -dtpa ( scn-bz-dtpa ) , isobutylcarboxycarbonic anhydride ( ma-dtpa ) , cyclic anhydride ( ca-dtpa ) , and 1- ( p-isothiocyanatobenzyl ) -ethylenediaminetetraacetic acid ( scn-bz-edta ) .
C0013254
dtpa
C0520458
ca-dtpa