Synonyms: Methanol,[5-[(3-amino-4-hydroxyphenyl)arseno]-2-hydroxyanilino]-, 1-(hydrogensulfoxylate) (ester), monosodium salt (8CI); Sulfoxylic acid,mono[[[5-[(3-amino-4-hydroxyphenyl)diarsenyl]-2-hydroxyphenyl]amino]methyl]ester, monosodium salt (9CI); Neo-I.C.I.; Neoarsphenamine; Neosalvarsan;Novarsenobenzol; Novarsenobillon; Novarsenol; Sodium3,3'-diamino-4,4'-dihydroxyarsenobenzene-N-formaldehydesulfoxylate; Sodium3,3'-diamino-4,4'-dihydroxyarsenobenzene-N-methylene-sulfoxylate; Sodiump,p'-dihydroxy-m,m'-diaminoarsenobenzene-N-monomethanol sulfoxylate