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530588 IκB Ubiquitination Inhibitor, GS143 - CAS 916232-21-8 - Calbiochem

A cell-permeable, selective inhibitor of E3 ligase complex SCFβTrCP1-mediated ubiquitination of phosphorylated IκBα (IC₅₀ = 5.2 µM).

MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.

Synonyms: 4-(3-Benzyl-4-(5-(2-fluoro-phenyl)-furan-2-ylmethylene)-5-oxo-4,5-dihydropyrazol-1-yl)-benzoic acid, 4-(3-Benzyl-4-((5-(2-fluorophenyl)furan-2-yl)methylene)-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzoic acid, GS 143

Primary Target: phosphorylated IκBα
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Overview

Replacement Information

Key Specifications Table

CAS #Empirical Formula
916232-21-8C₂₈H₁₉FN₂O₄

Products

Catalog NumberPackaging Qty/Pack
5.30588.0001 Glass bottle 10 mg
Description
OverviewA cell-permeable trisubstituted oxo-dihydropyrazolyl-benzoic acid that selectively inhibits the E3 ligase complex SCFβTrCP1-mediated ubiquitination of phosphorylated IκBα (IC50 = 5.2 µM), displaying little inhibitory potency against IKKβ-catalyzed IκBα phosphorylation, MDM2-mediated p53 ubiquitination, or the protease activities of cathepsin B, chymotrypsin, 20S & 26S proteasome (IC50 >100 µM). Effectively inhibits TNFα- and LPS-stimulated NF-κB transcription in HEK293, HT-29, and THP-1 cultures (IC50 from 2.1 to 10.5 µM). Intranasal administration (32 µg/20 µL/mouse) among OVA-sensitized mice 2 h prior to OVA challenge via inhalation greatly suppress NF-κB activation in lung tissue and airway inflammation in vivo. GS143 most likely prevents SCFβTrCP1 from interacting with phosphorylated IκBα without inhibiting SCFβTrCP1 E3 ligase activity directly.
Catalogue Number530588
Brand Family Calbiochem®
Synonyms4-(3-Benzyl-4-(5-(2-fluoro-phenyl)-furan-2-ylmethylene)-5-oxo-4,5-dihydropyrazol-1-yl)-benzoic acid, 4-(3-Benzyl-4-((5-(2-fluorophenyl)furan-2-yl)methylene)-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzoic acid, GS 143
References
ReferencesHirose, K., et al. 2008. Biochem. Biophys. Res. Commun. 374, 507.
Nakajima, H., et al. 2008. Biochem. Biophys. Res. Commun. 368, 1007.
Product Information
CAS number916232-21-8
FormDark red powder
Hill FormulaC₂₈H₁₉FN₂O₄
Chemical formulaC₂₈H₁₉FN₂O₄
Structure formula ImageStructure formula Image
Quality LevelMQ100
Applications
Biological Information
Primary Targetphosphorylated IκBα
Purity≥97% by HPLC
Physicochemical Information
Cell permeableY
Dimensions
Materials Information
Toxicological Information
Safety Information according to GHS
Safety Information
Product Usage Statements
Storage and Shipping Information
Ship Code Ambient Temperature Only
Toxicity Standard Handling
Storage +2°C to +8°C
Protect from Light Protect from light
Do not freeze Ok to freeze
Special InstructionsFollowing reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Packaging Information
Packaged under inert gas Packaged under inert gas
Transport Information
Supplemental Information
Specifications
Global Trade Item Number
Catalog Number GTIN
5.30588.0001 04055977260939

Documentation

IκB Ubiquitination Inhibitor, GS143 - CAS 916232-21-8 - Calbiochem SDS

Title

Safety Data Sheet (SDS) 

References

Reference overview
Hirose, K., et al. 2008. Biochem. Biophys. Res. Commun. 374, 507.
Nakajima, H., et al. 2008. Biochem. Biophys. Res. Commun. 368, 1007.
Data Sheet

Note that this data sheet is not lot-specific and is representative of the current specifications for this product. Please consult the vial label and the certificate of analysis for information on specific lots. Also note that shipping conditions may differ from storage conditions.

Revision13-June-2014 JSW
Synonyms4-(3-Benzyl-4-(5-(2-fluoro-phenyl)-furan-2-ylmethylene)-5-oxo-4,5-dihydropyrazol-1-yl)-benzoic acid, 4-(3-Benzyl-4-((5-(2-fluorophenyl)furan-2-yl)methylene)-5-oxo-4,5-dihydro-1H-pyrazol-1-yl)benzoic acid, GS 143
DescriptionA cell-permeable trisubstituted oxo-dihydropyrazolyl-benzoic acid that selectively inhibits the E3 ligase complex SCFβTrCP1-mediated ubiquitination of phosphorylated IκBα (IC50 = 5.2 µM), displaying little inhibitory potency against IKKβ-catalyzed IκBα phosphorylation, MDM2-mediated p53 ubiquitination, or the protease activities of cathepsin B, chymotrypsin, 20S & 26S proteasome (IC50 >100 µM). Cellular IκBα degradation blockage by GS143 treatment (complete inhibition against TNFα-induced degradation with 30 min 20 µM drug pretreatment in in HeLa S3 and HT29 cultures) effectively inhibits TNFα- and LPS-stimulated NF-κB transcription in HEK293, HT-29, and THP-1 cultures (IC50 from 2.1 to 10.5 µM). Intranasal administration (32 µg/20 µL/mouse) among OVA-sensitized mice 2 h prior to OVA challenge via inhalation greatly suppress OVA challenge-induced NF-κB activation in lung tissue (> 90% inhibition of nuclear NF-κB p65 DNA-binding activity 2 h post challenge) and airway inflammation (>80% reduction in eosinophils & lymphocytes in BALF 48 h post challenge) in vivo. GS143 most likely prevents SCFβTrCP1 from interacting with phosphorylated IκBα without inhibiting SCFβTrCP1 E3 ligase activity directly, as no apparent accumulation of another known SCFβTrCP1 substrate β-catenin is seen in HeLa S3 cells upon GS143 treatment (up to 20 µM for 3 h).
FormDark red powder
Intert gas (Yes/No) Packaged under inert gas
CAS number916232-21-8
Chemical formulaC₂₈H₁₉FN₂O₄
Structure formulaStructure formula
Purity≥97% by HPLC
SolubilityDMSO (25 mg/ml). Use only fresh DMSO for reconstitution.
Storage Protect from light
+2°C to +8°C
Do Not Freeze Ok to freeze
Special InstructionsFollowing reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
Toxicity Standard Handling
ReferencesHirose, K., et al. 2008. Biochem. Biophys. Res. Commun. 374, 507.
Nakajima, H., et al. 2008. Biochem. Biophys. Res. Commun. 368, 1007.