Term Name: | indigo carmine (acid form) |
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Synonyms: | (2E)-3-oxo-2-(3-oxo-5-sulfo-1,3-dihydro-2H-indol-2-ylidene)-2,3-dihydro-1H-indole-5-sulfonic acid, 2-(1,3-Dihydro-3-oxo-5-sulpho-2H-indol-2-ylidene)-3-oxoindoline-5-sulphonic acid, indigo carmine free acid, indigo-5,5'-disulfonic acid, Indigotindisulfonate, Indigotindisulfonic acid |
Definition: | A member of the class of indolones obtained by formal 2,2'-oxidative coupling of two molecules of 3-oxo-2,3-dihydroindole-5-sulfonic acids. |
Ontology: | ChEBI [CHEBI:90117] ( EBI ) |