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SB290157 trifluoroacetate Complement System antagonist

Cat.No.S8931

SB290157 trifluoroacetate (SB 290157 TFA) is a potent, competitive and selective antagonist of C3a receptor (C3aR) with IC50 of 200 nM for RBL-C3aR.
SB290157 trifluoroacetate Complement System antagonist Chemical Structure

Chemical Structure

Molecular Weight: 526.51

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Quality Control

Batch: S893101 DMSO]100 mg/mL]false]Ethanol]100 mg/mL]false]Water]Insoluble]false Purity: 99.69%
99.69

Solubility

In vitro
Batch:

DMSO : 100 mg/mL (189.92 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 100 mg/mL

Water : Insoluble

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In vivo
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Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

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Chemical Information, Storage & Stability

Molecular Weight 526.51 Formula

C24H29F3N4O6

Storage (From the date of receipt) 3 years -20°C powder
CAS No. 1140525-25-2 -- Storage of Stock Solutions

Synonyms N/A Smiles C1=CC=C(C=C1)C(COCC(=O)NC(CCCN=C(N)N)C(=O)O)C2=CC=CC=C2.C(=O)(C(F)(F)F)O

Mechanism of Action

Targets/IC50/Ki
RBL-C3aR
(Cell-free assay)
200 nM
In vitro

SB 290157 functions as a competitive antagonist of 125I-C3a radioligand binding to rat basophilic leukemia (RBL)-2H3 cells expressing the human C3aR (RBLC3aR), with an IC50 of 200 nM. SB 290157 is a functional antagonist, blocking C3a-induced C3aR internalization in a concentration-dependent manner and C3a-induced Ca21 mobilization in RBL-C3aR cells and human neutrophils with IC50s of 27.7 and 28 nM, respectively. SB 290157 is selective for the C3aR in that it does not antagonize the C5aR or six other chemotactic G protein-coupled receptors. Functional antagonism is not solely limited to the human C3aR; SB 290157 also inhibits C3ainduced Ca21 mobilization of RBL-2H3 cells expressing the mouse and guinea pig C3aRs. It potently inhibits C3a-mediated ATP release from guinea pig platelets and inhibits C3a-induced potentiation of the contractile response to field stimulation of perfused rat caudal artery.

In vivo

In animal models, SB 290157, inhibits neutrophil recruitment in a guinea pig LPS-induced airway neutrophilia model and decreases paw edema in a rat adjuvant-induced arthritis model.

References

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