Indigo Carmine

CAS NO:860-22-0

EC NO:212-728-8

Molecular Formula:C₁₆H₈N₂Na₂O₈S₂

Molecular Weight:466.3529

Synonyms:;C.I. 75781;C.I. Acid Blue 74;C.I. Food Blue 1;C.I. Food Blue 1, disodium salt;C.I. Natural Blue 2;Indigotindisulfonate Sodium [USAN];5,5-Indigodisulfonic acid, disodium salt;Acid Blue 74;disodium 5,5-(2-(1,3-dihydro-3-oxo-2H-indazol-2-ylidene)-1,2-dihydro-3H-indol-3-one)disulphonate;disodium 5,5-indigodisulphonate;E 132;Indigo-5,5-disulphonic acid disodium salt;1H-indole-5-sulfonic acid, 2-(1,3-dihydro-3-oxo-5-sulfo-2H-indol-2-ylidene)-2,3-dihydro-3-oxo-, disodium salt, (2E)-;disodium (2E)-3,3'-dioxo-1,1',3,3'-tetrahydro-2,2'-biindole-5,5'-disulfonate;

Molecular Structure: