Synonyms: Aceticacid, [[[3-[3-[[bis(carboxymethyl)amino]methyl]-4-hydroxy-5-isopropyl-2-methyl-a-(o-sulfophenyl)benzylidene]-5-isopropyl-2-methyl-6-oxo-1,4-cyclohexadien-1-yl]methyl]imino]di-,pentasodium salt (7CI); Acetic acid, [[[a-[3-[[bis(carboxymethyl)amino]methyl]-5-isopropyl-2-methyl-4-oxo-2,5-cyclohexadien-1-ylidene]-o-sulfobenzyl]-3-isopropyl-6-methyl-5-salicyl]imino]di-,pentasodium salt (8CI); Methylthymol Blue, pentasodium salt;Thymolsulfenephthalexon