Synonyms: Aceticacid,[3H-2,1-benzoxathiol-3-ylidenebis[(6-hydroxy-5-methyl-m-phenylene)methylenenitrilo]]tetra-,S,S-dioxide, tetrasodium salt (8CI);Glycine,N,N'-[(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[(6-hydroxy-5-methyl-3,1-phenylene)methylene]]bis[N-(carboxymethyl)-,tetrasodium salt (9CI);Glycine,N,N'-[3H-2,1-benzoxathiol-3-ylidenebis[(6-hydroxy-5-methyl-3,1-phenylene)methylene]]bis[N-(carboxymethyl)-,S,S-dioxide, tetrasodium salt;OmniPur-EDM;Xylene orange tetrasodium salt;o-Cresolphthalexon-S tetrasodium salt;