Synonyms: Aldarsone(6CI); Methanesulfinic acid, (5-arsono-2-hydroxyanilino)-, disodium salt (8CI);Methanesulfinic acid, [(5-arsono-2-hydroxyphenyl)amino]-, disodium salt (9CI);m-Arsanilic acid, 4-hydroxy-N-(sulfinomethyl)-, disodium salt (7CI); NSC 31038;Phenarsone sulfoxylate; Phenarsone sulfoxylate, disodium salt; Sodium 3-amino-4-hydroxyphenylarsonate-N-methanalsulfoxylate