506106

p21-Activated Kinase Inhibitor III, IPA-3

The p21-Activated Kinase Inhibitor III, IPA-3, also referenced under CAS 42521-82-4, controls the biological activity of p21-Activated Kinase. This small molecule/inhibitor is primarily used for Phosphorylation & Dephosphorylation applications.

• Synonym(s): p21-Activated Kinase Inhibitor III, IPA-3, 2,2ʹ-Dihydroxy-1,1ʹ-dinaphthyldisulfide, PAK Inhibitor III
• Empirical Formula (Hill Notation): C₂₀H₁₄O₂S₂
• CAS Number: 42521-82-4
• Molecular Weight: 350.45
• MDL number: MFCD00388917
• UNSPSC Code: 12352200
• NACRES: NA.77

Properties

• Quality Level: 100
• Assay: ≥97% (HPLC)
• form: solid
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; protect from light
• color: yellow
• solubility: DMSO: 10 mg/mL; ethanol: 2 mg/mL
• shipped in: wet ice
• storage temp.: −20°C
• InChI: 1S/C20H14O2S2/c21-17-11-9-13-5-1-3-7-15(13)19(17)23-24-20-16-8-4-2-6-14(16)10-12-18(20)22/h1-12,21-22H
• InChI key: RFAXLXKIAKIUDT-UHFFFAOYSA-N

Description

General description

A cell-permeable symmetrical disulfide allosteric inhibitor that selectively targets the autoregulatory domain of group I, but not group II, PAKs (p21-activated kinases) and prevents the activation of PAK1/2/3 (% inhibition= 95, 70, and 60, respectively, with 10 µM inhibitor; IC₅₀ = 2.5 µM for PAK1). Specificity test shows ≥ 50% inhibition, in the presence of 10 µM ATP and inhibitor, against 9 of 214 non-PAK human kinases. Shown to effectively suppress both basal and PDGF-induced PAK activation at 30 µM in mouse embryonic fibroblasts. IPA-3 does not inhibit the enzymatic activity of preactivated PAKs and reduction of the intramolecular disulfide bond of IPA-3 by DTT renders it inactive.

Packaging

Packaged under inert gas

Warning

Toxicity: Irritant (B)

Other Notes

Deacon, S.W., et al. 2008. Chem. Biol.15, 322.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Pictograms: GHS05,GHS09
• Signal Word: Danger
• Hazard Statements: H318,H410
• Precautionary Statements: P273 - P280 - P305 + P351 + P338 - P391 - P501
• Hazard Classifications: Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable