Endogenous Metabolite (EM) Information
EM ID
EM00080
EM Name
Indoxyl sulfate
Synonyms
Indoxyl sulfate; 3-Indoxyl sulfate; Indoxylsulfuric acid; 1H-indol-3-yl hydrogen sulfate; 3-Indoxylsulfuric acid; 3-SULFOOXY-1H-INDOLE; UNII-KT0QA88913; Indol-3-yl sulfate; indol-3-yl sulphate; 1H-indol-3-yloxidanesulfonic acid; KT0QA88913; IOS; Indican (metabolic indican); indoxyl sulphate; 3-indolyl sulfate; indoxyl-3-sulphate; Indican (metabolic indolyl sulfate); Indoxyl sulfic acid; 3-Indoxyl sulphate; 1H-Indol-3-ol, hydrogen sulfate (ester); AC1L1UTK; AC1Q6XJD; 3-indolyl hydrogen sulfate
Structure
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3D MOL 2D MOL
Formula
C8H7NO4S
Canonical SMILES
BXFFHSIDQOFMLE-UHFFFAOYSA-N
InChI
InChI=1S/C8H7NO4S/c10-14(11,12)13-8-5-9-7-4-2-1-3-6(7)8/h1-5,9H,(H,10,11,12)
InChIKey
BXFFHSIDQOFMLE-UHFFFAOYSA-N
CAS Number
CAS 487-94-5
Pharmaceutical Properties Molecular Weight 213.21 Topological Polar Surface Area 87.8
Heavy Atom Count 14 Rotatable Bond Count 2
Hydrogen Bond Donor Count 2 Hydrogen Bond Acceptor Count 4
XLogP
1.3
PubChem CID
10258
ChEBI ID
CHEBI:43355
DT(s) "handling" This EM BCRP Transporter Info Breast cancer resistance protein [1]
OAT1 Transporter Info Organic anion transporter 1 [2]
OAT3 Transporter Info Organic anion transporter 3 [3]
OATP4C1 Transporter Info Organic anion transporting polypeptide 4C1 [4]
References
1 Identification of ABCG2 as an Exporter of Uremic Toxin Indoxyl Sulfate in Mice and as a Crucial Factor Influencing CKD Progression. Sci Rep. 2018 Jul 24;8(1):11147.
2 Untargeted metabolomics identifies enterobiome metabolites and putative uremic toxins as substrates of organic anion transporter 1 (Oat1). J Proteome Res. 2011 Jun 3;10(6):2842-51.
3 The drug transporter OAT3 (SLC22A8) and endogenous metabolite communication via the gut-liver-kidney axis. J Biol Chem. 2017 Sep 22;292(38):15789-15803.
4 SLCO4C1 transporter eliminates uremic toxins and attenuates hypertension and renal inflammation. J Am Soc Nephrol. 2009 Dec;20(12):2546-55.

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