Synonyms: Aceticacid,[3H-2,1-benzoxathiol-3-ylidenebis[(6-hydroxy-5-isopropyl-2-methyl-m-phenylene)methylenenitrilo]]tetra-,S,S-dioxide, tetrasodium salt (8CI); 3H-2,1-Benzoxathiole,glycine deriv.;Methylthymol Blue sodium salt; Glycine,N,N'-[(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[[6-hydroxy-2-methyl-5-(1-methylethyl)-3,1-phenylene]methylene]]bis[N-(carboxymethyl)-,tetrasodium salt (9CI); Methylthymol Blue (6CI); Glycine,N,N'-[3H-2,1-benzoxathiol-3-ylidenebis[[6-hydroxy-2-methyl-5-(1-methylethyl)-3,1-phenylene]methylene]]bis[N-(carboxymethyl)-,S,S-dioxide, tetrasodium salt;