3-Indolepropionic acid

Catalog No. Size PriceQuantity
M13040-2 2mg solid $80
M13040-10 10mg solid $240


3-Indolepropionic acid (IPA, indole-3-propionic acid), a gut microbial metabolite, is a potent neuroprotective antioxidant and plant auxin.

Product information

CAS Number: 830-96-6

Molecular Weight: 189.21

Formula: C11H11NO2

Chemical Name: 3-(1H-indol-3-yl)propanoic acid

Smiles: OC(=O)CCC1=CNC2=CC=CC=C12


InChi: InChI=1S/C11H11NO2/c13-11(14)6-5-8-7-12-10-4-2-1-3-9(8)10/h1-4,7,12H,5-6H2,(H,13,14)

Technical Data

Appearance: Solid Power

Purity: ≥98% (or refer to the Certificate of Analysis)

Solubility: DMSO : ≥ 100 mg/mL (528.51 mM)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical or refer to Certificate of Analysis

Storage Condition: Dry, dark and -20 oC for 1 year or refer to the Certificate of Analysis.

Shelf Life: ≥12 months if stored properly.

Stock Solution Storage: 0 - 4 oC for 1 month or refer to the Certificate of Analysis.

Drug Formulation: To be determined

HS Tariff Code: 382200

How to use

In Vitro:

3-Indolepropionic acid is shown to be a powerful antioxidant and has potential in the treatment for Alzheimer’s disease. 3-Indolepropionic acid is a more potent scavenger of hydroxyl radicals than melatonin. Similar to melatonin but unlike other antioxidants, 3-Indolepropionic acid scavenges radicals without subsequently generating reactive and pro-oxidant intermediate compounds. It is also suggested that indolepropionic acid, a gut microbiota-produced metabolite, is a potential biomarker for the development of type 2 diabetes (T2D) that may mediate its protective effect by preservation of β-cell function.


  1. Wikoff WR, et al. Metabolomics analysis reveals large effects of gut microflora on mammalian blood metabolites. Proc Natl Acad Sci U S A. 2009 Mar 10;106(10):3698-703.
  2. Reiter RJ, et al. Reactive oxygen intermediates, molecular damage, and aging. Relation to melatonin. Ann N Y Acad Sci. 1998 Nov 20;854:410-24.
  3. de Mello VDet al. Indolepropionic acid and novel lipid metabolites are associated with a lower risk of type 2 diabetes in the Finnish Diabetes Prevention Study. Sci Rep. 2017 Apr 11;7:46337. doi: 10.1038/srep46337.

Products are for research use only. Not for human use.

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