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Cat.No. 4392 - 680C91 | C15H11FN2 | CAS No. 163239-22-3
Description: Potent and selective tryptophan 2,3-dioxygenase (TDO) inhibitor
Chemical Name: 6-Fluoro-3-[(1E)-2-(3-pyridinyl)ethenyl]-1H-indole
Purity: ≥98% (HPLC)
Citations (2)

Biological Activity

Potent and selective inhibitor of tryptophan 2,3-dioxygenase (TDO) (Ki = 51 nM). Exhibits no activity against indoleamine 2,3-dioxygenase, monoamine oxidase A and B, 5-HT uptake or 5-HT1A, 1D, 2A and 2C receptors. Produces large increases in brain tryptophan and serotonin in vitro and in vivo in the rat.

Technical Data

M. Wt 238.26
Formula C15H11FN2
Storage Store at +4°C
Purity ≥98% (HPLC)
CAS Number 163239-22-3
PubChem ID 10014426
Smiles FC1=CC=C2C(NC=C2/C=C/C3=CN=CC=C3)=C1

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

All Tocris products are intended for laboratory research use only.

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
DMSO 23.83 100
ethanol 11.91 50

Preparing Stock Solutions

The following data is based on the product molecular weight 238.26. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.

Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 4.2 mL 20.99 mL 41.97 mL
5 mM 0.84 mL 4.2 mL 8.39 mL
10 mM 0.42 mL 2.1 mL 4.2 mL
50 mM 0.08 mL 0.42 mL 0.84 mL

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Product Datasheets

Certificate of Analysis / Product Datasheet
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References are publications that support the products' biological activity.

Salter et al (1995) The effects of a novel and selective inhibitor of tryptophan 2,3-dioxygenase on tryptophan and serotonin metabolism in the rat. Biochem.Pharmacol. 17 1435 PMID: 7539265

Salter et al (1995) The effects of an inhibitor of tryptophan 2,3-dioxygenase and a combined inhibitor of tryptophan 2,3-dioxygenase and 5-HT reuptake in the rat. Neuropharmacology 34 217 PMID: 7617147

Opitz et al (2011) An endogenous tumour-promoting ligand of the human aryl hydrocarbon receptor. Nature 478 197 PMID: 21976023

If you know of a relevant reference for 680C91, please let us know.

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Keywords: 680C91, supplier, tryptophan, 2,3-dioxygenase, inhibits, TDO, inhibitors, tryptophan, catabolism, TDO, TDO, Tocris Bioscience

2 Citations for 680C91

Citations are publications that use Tocris products. Selected citations for 680C91 include:

Breda et al (2016) Tryptophan-2,3-dioxygenase (TDO) inhibition ameliorates neurodegeneration by modulation of kynurenine pathway metabolites. Proc.Natl.Acad.Sci.U.S.A. 113 5435 PMID: 27114543

D'Amato et al (2015) A TDO2-AhR Signaling Axis Facilitates Anoikis Resistance and Metastasis in Triple-Negative Breast Cancer. Cancer Res 75 4651 PMID: 26363006

Do you know of a great paper that uses 680C91 from Tocris? If so please let us know.

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