Indolesulfonic acid used as a dye in renal function testing for the detection of nitrates and chlorates, and in the testing of milk.
Also Known As:
Indigo Blue; (delta-2,2'-biindole)-3,3'-dione; 2-(1,3-Dihydro-3-oxo-5-sulpho-2H-indol-2-ylidene)-3- oxoindoline-5-sulphonic acid; D&C Blue NO. 6; FD&C Blue No. 2; Indigo; Indigo Disulfonate; Indigotin; Indigotindisulfonate; Indigotindisulfonic Acid; Carmine, Indigo; Indigo Blue, Soluble; Indigotindisulfonate Sodium; Soluble Indigo Blue; 1H-Indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, disodium salt