MilliporeSigma
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I8130

Sigma-Aldrich

Indigo carmine

Dye content ~85 %

Synonym(s):
Indigo-5,5′-disulfonic acid disodium salt, Indigocarmine, Acid Blue 74
Empirical Formula (Hill Notation):
C16H8N2Na2O8S2
CAS Number:
Molecular Weight:
466.35
Colour Index Number:
73015
Beilstein:
4103904
EC Number:
MDL number:

composition

Dye content, ~85%

SMILES string

[Na+].[Na+].[O-]S(=O)(=O)c1ccc2NC(\C(=O)c2c1)=C3\Nc4ccc(cc4C3=O)S([O-])(=O)=O

InChI

1S/C16H10N2O8S2.2Na/c19-15-9-5-7(27(21,22)23)1-3-11(9)17-13(15)14-16(20)10-6-8(28(24,25)26)2-4-12(10)18-14;;/h1-6,17-18H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2/b14-13+;;

InChI key

KHLVKKOJDHCJMG-QDBORUFSSA-L

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