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I3007

Sigma-Aldrich

5,5′,7-Indigotrisulfonic acid tripotassium salt

~75%

Synonym(s):

Indigo-5,5′,7-trisulfonic acid tripotassium salt, Potassium indigotrisulfonate, Tripotassium indigo-5,5′,7-trisulfonate, tri-Potassium indigo-5,5′,7-trisulfonate

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About This Item

Empirical Formula (Hill Notation):
C16H7K3N2O11S3
CAS Number:
Molecular Weight:
616.72
Beilstein:
4932187
MDL number:
UNSPSC Code:
12171500

Assay

~75%

SMILES string

[K+].[K+].[K+].[O-]S(=O)(=O)c1ccc2NC(\C(=O)c2c1)=C3\Nc4c(cc(cc4S([O-])(=O)=O)S([O-])(=O)=O)C3=O

InChI

1S/C16H10N2O11S3.3K/c19-15-8-3-6(30(21,22)23)1-2-10(8)17-13(15)14-16(20)9-4-7(31(24,25)26)5-11(12(9)18-14)32(27,28)29;;;/h1-5,17-18H,(H,21,22,23)(H,24,25,26)(H,27,28,29);;;/q;3*+1/p-3/b14-13+;;;

InChI key

XOSMXDUITYWYGR-VPOCKCTCSA-K

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Application

Reagent for the determination of ozone in water

replaced by

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Bader, H. and Hoigne, J.
J. Water Res., 15, 449-449 (1981)

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