iodine (131 i) derlotuximab biotin iodine (131 i) derlotuximab biotin iodine (131 i) derlotuximab biotin is a monoclonal antibody designed for the treatment of recurrent glioblastoma multiforme. iodine (131 i) derlotuximab biotinmonoclonal antibodytype?sourcechimeric (mouse/human)targethistone complexclinical datatrade namescotaraatc codenoneidentifierscas number340013-96-9chemspidernoneunii1724ujb90bchemical and physical dataformulac6436h9960n1704o2022s46molar mass145035.14 g·mol−1 this drug was developed by peregrine pharmaceuticals, inc.