Pricing Availability Delivery Time Qty
Cat.No. 5921 - D9 | C25H20AuOPS | CAS No. 1527513-89-8
Description: Potent thioredoxin reductase (TrxR) inhibitor
Chemical Name: (Diphenyl-2-thienylphosphine-κP)[2-(4-methoxyphenyl)ethynyl]gold
Purity: ≥98% (HPLC)

Biological Activity

Potent thioredoxin reductase (TrxR) inhibitor (EC50 = 2.8 nM, IC50 = 0.03 and 0.1 μM in MCF-7 cells and HT-29 cells, respectively). Highly stable in vivo; exhibits no significant ligand exchange with albumin. Inhibits tumor proliferation in vitro and in vivo by inducing cell death. Selectively kills cancer cells.

Technical Data

M. Wt 596.43
Formula C25H20AuOPS
Storage Store at -20°C
Purity ≥98% (HPLC)
CAS Number 1527513-89-8
PubChem ID 127021039
Smiles [Au].COC1=CC=C(C=C1)C#C.S1C=CC=C1P(C1=CC=CC=C1)C1=CC=CC=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 59.64 100

Preparing Stock Solutions

The following data is based on the product molecular weight 596.43. 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 1.68 mL 8.38 mL 16.77 mL
5 mM 0.34 mL 1.68 mL 3.35 mL
10 mM 0.17 mL 0.84 mL 1.68 mL
50 mM 0.03 mL 0.17 mL 0.34 mL

Molarity Calculator

Calculate the mass, volume, or concentration required for a solution.

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Dilution Calculator

Calculate the dilution required to prepare a stock solution.

Product Datasheets

Safety Datasheet


References are publications that support the products' biological activity.

Zhang et al (2014) Synthesis and molecular recognition studies on small-molecule inhibitors for thioredoxin reductase. J.Med.Chem. 57 8132 PMID: 25249032

Lin et al (2015) pH-sensitive polymeric nanoparticles with gold(I) compound payloads synergistically induce cancer cell death through modulation of autophagy. Mol.Pharm. 12 2869 PMID: 26101892

If you know of a relevant reference for D9, please let us know.

View Related Products by Target

View Related Products by Product Action

View all Thioredoxin Reductase Inhibitors

Keywords: D9, supplier, Thioredoxin, reductase, TrxR, inhibitors, inhibits, anti-tumor, cancer, gold, Au, TrxR, TrxR, Tocris Bioscience

Citations for D9

Citations are publications that use Tocris products.

Currently there are no citations for D9. Do you know of a great paper that uses D9 from Tocris? If so please let us know.

D9 Reviews

Average Rating:

(Based on 0 Reviews)

1 Star
2 Star
3 Star
4 Star
5 Star

Have you used D9?

Submit a review and receive a $25US/€18/£15/$25CAN Amazon gift card if you include an image -$10US/€7/£6/$10CAN Amazon gift card for reviews without an image. Limited to verified customers in USA, Canada and Europe.

Literature in this Area


Cancer Research Product Guide

A collection of over 750 products for cancer research, the guide includes research tools for the study of:

  • Cancer Metabolism
  • Epigenetics in Cancer
  • Receptor Signaling
  • Cell Cycle and DNA Damage Repair
  • Angiogenesis
  • Invasion and Metastasis

Immunology Product Listing

A collection of over 190 products for immunology research, the guide includes research tools for the study of:

  • Chemokine and Cytokine Signaling
  • Chemotaxis
  • Complement System
  • Immune Cell Signaling
  • Inflammation

Neurodegeneration Product Guide

A collection of over 275 products for neurodegeneration research, the guide includes research tools for the study of:

  • Alzheimer's disease
  • Parkinson's disease
  • Huntington's disease

Autophagy Poster

Autophagy is a cellular process used by cells for degradation and recycling. Written by Patricia Boya and Patrice Codogno, this poster summarizes the molecular machinery, physiology and pathology of autophagy. Compounds available from Tocris are listed.

Programmed Cell Death

Programmed Cell Death Poster

There are two currently recognized forms of programmed cell death: apoptosis and necroptosis. This poster summarizes the signaling pathways involved in apoptosis, necroptosis and cell survival following death receptor activation, and highlights the influence of the molecular switch, cFLIP, on cell fate.