Synonyms: Methanesulfonicacid, [1,2-diarsenediylbis[(6-hydroxy-3,1-phenylene)imino]]bis-, disodium salt(9CI); Methanesulfonic acid, [arsenobis[(6-hydroxy-m-phenylene)imino]]di-,disodium salt (7CI,8CI); Sulfarsphenamine (6CI); Belasphin; Disodium3,3'-diamino-4,4'-dihydroxyarsenobenzene-N,N'-dimethylenebisulfite; Disodium3,3'-diamino-4,4'-dihydroxyarsenobenzene-N-dimethylenesulfonate; Karsulphan;Metarsenobillon; Miarsenol; Myarsenol; Myoarsemin; Myoarsphenamine;Myosalvarsan; Myosaviol; Odarsol; Sulfarphenamin; Sulfarsenobenzene;Sulfarsenol; Sulpharsenolum; Sulphostab; Thioarsmine; Thiosarmine; Trisodarsen;myo-Salvarsan