Synonyms: Samarate(5-)-153Sm,[[[1,2-ethanediylbis[(nitrilo-kN)bis(methylene)]]tetrakis[phosphonato-kO]](8-)]-, pentahydrogen, (OC-6-21)- (9CI);Samarate(5-)-153Sm,[[[1,2-ethanediylbis[nitrilobis(methylene)]]tetrakis[phosphonato]](8-)-N,N',OP,OP',OP'',OP''']-,pentahydrogen, (OC-6-21)-; Phosphonic acid,[1,2-ethanediylbis[nitrilobis(methylene)]]tetrakis-, samarium-153 complex;153Sm-EDTMP; Samarium(153Sm)-EDTMP