Synonyms:
indigotetrasulfonic acid tetrapotassium salt ; indigotetrasulfonic acid tetrapotassium salt hydrate ; indigotetrasulfonate tetrapotassium salt hydrate ; [d2,2'-biindoline]tetrasulfonic acid, 3,3'-dioxo-,tetrapotassium salt (7ci,8ci) ; tetrapotassium indigotetrasulfonate ; 1h-indoledisulfonic acid,2-(1,3-dihydro-3-oxo-2h-indol-2-ylidene)-2,3-dihydro-3-oxo-, disulfo deriv.,potassium salt (1:4) ; 1h-indoledisulfonicacid, 2-(1,3-dihydro-3-oxo-2h-indol-2-ylidene)-2,3-dihydro-3-oxo-, disulfoderiv., tetrapotassium salt (9ci) ; potassium indigotetrasulfonate