Medical Definition of Indigo carmine
1.
3,3'-dioxo-(delta-2,2'-biindoline)-5,5'-disulfonic acid disodium salt. An indolesulfonic acid that is used as a dye in renal function testing and as a reagent for the detection of nitrates and chlorates and in the testing of milk.
Pharmacological action: dyes, indicators and reagents, renal agents.
Chemical name: 1H-Indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, disodium salt
(12 Dec 1998)
Lexicographical Neighbors of Indigo Carmine
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