PX 12

Name: PX 12
Brand: Tocris Bioscience
SKU: 2954

Tocris Bioscience, part of Bio-Techne | Catalog # 2954

Citations (22)

COA / SDS

Thioredoxin-1 inhibitor

Key Product Details

Description:	Thioredoxin-1 inhibitor
Alternative Names:	IV-2
Chemical Name:	2-[(1-Methylpropyl)dithio]-1H-imidazole
Purity:	≥98% (HPLC)
Molecular Weight:	188.31

View Full Technical Details for PX 12

Technical Data
Citations

Biological Activity for PX 12

PX 12 is a thioredoxin-1 (Trx-1) inhibitor; irreversibly inactivates Trx-1 as a substrate for reduction by thioredoxin reductase (TR); competitively inhibits the reduction of Trx-1 by TR (K_i = 30.8 μM). Attenuates expression of HIF-1α, VEGF and iNOS (IC₅₀ values are 7.2, 10.4 and 18.1 μM respectively). Exhibits antitumor activity; directly inhibits tubulin in vitro and decreases tumor microvessel density in vivo.

Technical Data for PX 12

M. Wt	188.31
Formula	C₇H₁₂N₂S₂
Storage	Store at +4°C
Purity	≥98% (HPLC)
CAS Number	141400-58-0
PubChem ID	219104
InChi Key	BPBPYQWMFCTCNG-UHFFFAOYSA-N
Smiles	CC(CC)SSC1=NC=CN1

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

Tocris products are intended for laboratory research use only, unless stated otherwise.

Solubility for PX 12

	Solvent	Max Conc. mg/mL	Max Conc. mM
Solubility
Solubility	DMSO	18.83	100

Preparing Stock Solutions for PX 12

The following data is based on the product molecular weight 188.31.

Batch specific molecular weights may vary from batch to batch due to the degree 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	5.31 mL	26.55 mL	53.10 mL
5 mM	1.06 mL	5.31 mL	10.62 mL
10 mM	0.53 mL	2.66 mL	5.31 mL
50 mM	0.11 mL	0.53 mL	1.06 mL

Molarity Calculator

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

Mass

Concentration

Volume

M. Wt*

g/mol

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

Dilution Calculator

Calculate the dilution required to prepare a stock solution.

Concentration 1 (C1)

Volume 1 (V1)

Concentration 2 (C2)

Volume 2 (V2)

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.

Volume (to add to vial)

Mass (in vial)

Desired Reconstitution Concentration

References for PX 12

References are publications that support the biological activity of the product.

Welsh The thioredoxin redox inhibitors 1-methylpropyl 2-imidazolyl disulfide and pleurotin inhibit hypoxia-induced factor 1α and vascular endothelial growth factor formation. Mol.Cancer.Ther. 2003 PMID: 12657718
Jordan The thioredoxin-1 inhibitor 1-methylpropyl 2-imidazolyl disulfide (PX-12) decreases vascular permeability in tumor xenografts monitored by dynamic contrast enhanced magnetic resonance imaging. Clin.Cancer Res. 2005 PMID: 15701837
Kirkpatrick Mechanisms of inhibition of the thioredoxin growth factor system by antitumor 2-imidazolyl disulfides. Biochem.Pharmacol. 1998 PMID: 9605422