10mM in DMSO for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Store at -80°C Ships Dry ice packs + Cold packs Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
VRT-043198, the agent metabolite of VX-765 (Belnacasan), is a potent, selective and blood-brain barrier permeable inhibitor of interleukin-converting enzyme/caspase-1 subfamily caspases. VRT-043198 exhibits K i values of 0.8 nM and 0.6 nM for ICE/caspase-1 and caspase-4, respectively
In Vitro
VRT-043198 exhibits 100- to 10,000-fold selectivity against other caspase-3 and -6 to -9. VRT043198 inhibits the release of interleukin (IL)-1β and IL-18, but it has little effect on the release of several other cytokines, including IL-1α, tumor necrosis factor-, IL-6 and IL-8. VRT-043198 inhibited IL-1β release from both PBMCs (n = 8) and whole blood (n = 4) with IC 50 values of 0.67±0.55 and 1.9±0.80 nM, respectively. VRT-043198 lacks potent antiapoptotic activity. MCE has not independently confirmed the accuracy of these methods. They are for reference only.
In Vivo
VX-765 is converted rapidly to VRT-043198 under the action of plasma and liver esterases and also much more slowly in aqueous solution . VX765 reduces disease severity and the expression of inflammatory mediators in models of rheumatoid arthritis and skin inflammation . VX765 (25, 50, 100, or 200 mg/kg) inhibits lipopolysaccharide-induced cytokine secretion . MCE has not independently confirmed the accuracy of these methods. They are for reference only. Animal Model: Naïve male CD-1 mice . Dosage: 25-200 mg/kg. Administration: Oral gavage 1 h before i.v. injection of 2 mg/kg E. coli LPS (strain 0111:B4). Result: Reduced serum IL-1β levels.
IC50& Target:Caspase-1 0.8 nM (Ki) Caspase-4 0.6 nM (Ki)
| Isomeric SMILES | CC(C)(C)[C@@H](C(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(=O)O)C=O)NC(=O)C2=CC(=C(C=C2)N)Cl |
|---|---|
| Alternate CAS | 244133-31-1 |
| PubChem CID | 11443029 |
| MeSH Entry Terms | (S)-1-((S)-2-1((-(4-amino-3-chloro-phenyl)-methanoyl)-amino)-3,3-dimethyl-butanoyl)-pyrrolidine-2-carboxylic acid ((2R,3S)-2-ethoxy-5-oxo-tetrahydro-furan-3-yl)-amide;(S)-3-((1-((S)-1-((S)-2-((1-(4-amino-3-chlorophenyl)methanoyl)amino)-3,3-dimethyl-butano |
| Molecular Weight | 480.9 |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →| Activity Type | Activity Value -log(M) | Mechanism of Action | Activity Reference | Publications (PubMed IDs) |
|---|
| Activity Type | Activity Value -log(M) | Mechanism of Action | Activity Reference | Publications (PubMed IDs) |
|---|
