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SB590885 B-Raf inhibitor

Cat.No.S2220

SB590885 is a potent B-Raf inhibitor with Ki of 0.16 nM in a cell-free assay, 11-fold greater selectivity for B-Raf over c-Raf, no inhibition to other human kinases.
SB590885 Raf inhibitor Chemical Structure

Chemical Structure

Molecular Weight: 453.54

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Quality Control

Batch: Purity: 99.91%
99.91

Cell Culture, Treatment & Working Concentration

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
Sf9 Function assay Binding affinity to human N-His6-tagged B-Raf expressed in Sf9 cells, Kd=0.00016μM 22024030
white blood cells Antifibrotic assay 25 to 150 mg/kg 13 days Antifibrotic activity in bleomycin-induced C57B1/6 mouse model assessed as inhibition of white blood cells in bronchoalveolar lavage at 25 to 150 mg/kg, po bid administered 2 hrs prior bleomycin induction for 13 days 22222036
insect cells Function assay 30 mins Inhibition of full length human 6His-tagged BRAF V600E mutant expressed in baculovirus infected insect cells co-expressing human CDC37 (1 to 378 residues) using MEK1 as substrate after 30 mins, IC50=0.00016μM 29461827
A549 Function assay 60 mins Inhibition of B-Raf V600E mutant-mediated Erk phosphorylation in human A549 cells after 60 mins by Western blot analysis, EC50=0.028μM 22222036
Colo205 Function assay 60 mins Inhibition of B-Raf V600E mutant-mediated Erk phosphorylation in human Colo205 cells after 60 mins by Western blot analysis, EC50=0.028μM 22222036
HT-29 Function assay 60 mins Inhibition of B-Raf V600E mutant-mediated Erk phosphorylation in human HT-29 cells after 60 mins by Western blot analysis, EC50=0.028μM 22222036
MALME3M Function assay 60 mins Inhibition of B-Raf V600E mutant-mediated Erk phosphorylation in human MALME3M cells after 60 mins by Western blot analysis, EC50=0.028μM 22222036
SKMEL28 Function assay 60 mins Inhibition of B-Raf V600E mutant-mediated Erk phosphorylation in human SKMEL28 cells after 60 mins by Western blot analysis, EC50=0.028μM 22222036
A375 Function assay Inhibition of b-Raf in human A375 cells assessed phosphorylation of ERK, IC50=0.29μM 22808911
A375 Function assay Inhibition of BRAF V600E mutant in human A375 cells assessed as reduction in ERK phosphorylation by immunoblot analysis, IC50=0.29μM 29461827
A375 Antiproliferative assay Antiproliferative activity against human A375 cells expressing B-Raf V600E mutant and wild type Ras, IC50=0.37μM 22808911
A375 Cytotoxicity assay 48 hrs Cytotoxicity against human A375 cells harboring BRAF V600E mutant after 48 hrs by CellTiter-Glo assay, IC50=0.37μM 29461827
HFF Function assay 60 mins Inhibition of B-Raf-mediated Erk phosphorylation in human HFF cells after 60 mins by Western blot analysis, EC50=1.1μM 22222036
HMEC Function assay 60 mins Inhibition of B-Raf-mediated Erk phosphorylation in human HMEC cells after 60 mins by Western blot analysis, EC50=1.1μM 22222036
PREC Function assay 60 mins Inhibition of B-Raf-mediated Erk phosphorylation in human PREC cells after 60 mins by Western blot analysis, EC50=1.1μM 22222036
HCT116 Growth inhibition assay 72 hrs Growth inhibition of human HCT116 cells expressing wild-type B-Raf and K-Ras2 G13D mutant after 72 hrs by WST-1 assay, EC50=1.1μM 22222036
SK-MEL-2 Growth inhibition assay 72 hrs Growth inhibition of human SK-MEL-2 cells expressing wild-type B-Raf and N-Ras2 Q61R mutant after 72 hrs by WST-1 assay, EC50=1.1μM 22222036
HCT116 Antiproliferative assay Antiproliferative activity against human HCT116 cells expressing wild type b-Raf and KRAS mutant, IC50=4.6μM 22808911
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Solubility

In vitro
Batch:

DMSO : 5 mg/mL (11.02 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

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Mass Concentration Volume Molecular Weight
Dilution Calculator Molecular Weight Calculator

In vivo
Batch:

In vivo Formulation Calculator (Clear solution)

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Working concentration: mg/ml;

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.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
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Chemical Information, Storage & Stability

Molecular Weight 453.54 Formula

C27H27N5O2

Storage (From the date of receipt)
CAS No. 405554-55-4 Download SDF Storage of Stock Solutions

Synonyms N/A Smiles CN(C)CCOC1=CC=C(C=C1)C2=NC(=C(N2)C3=CC=NC=C3)C4=CC5=C(C=C4)C(=NO)CC5

Mechanism of Action

Features
Displays significant selectivity for B-Raf over c-Raf.
Targets/IC50/Ki
B-Raf
(Cell-free assay)
0.16 nM(Ki)
In vitro
SB590885 displays significant selectivity for B-Raf over c-Raf with Ki of 0.16 nM over 1.72 nM. This compound is a more potent inhibitor than the previously described Raf/VEGFR kinase inhibitor BAY 439006 (Ki = 38 nM for mutant B-Raf, 6 nM for c-Raf). It displays potent selectivity over 46 other kinases. Unlike the multi-kinase inhibitor BAY43-9006, this chemical stabilizes the oncogenic B-Raf kinase domain in an active configuration. In Colo205, HT29, A375P, SKMEL28, and MALME-3M cells expressing oncogenic B-RafV600E, this compound treatment potently inhibits ERK phosphorylation with EC50 of 28 nM, 58 nM, 290 nM, 58 nM, and 190 nM, respectively, and consistently, inhibits the proliferation with EC50 of 0.1 μM, 0.87 μM, 0.37 μM, 0.12 μM, and 0.15 μM, respectively. It decreases anchorage-independent growth of melanoma cell lines in a BRAF mutant-selective manner. This chemical displays high affinity for B-Raf with Kd of 0.3 nM. Most of the melanoma cell lines that harbor the BRAF V600E mutation and lack CDK4 mutations (451Lu, WM35, and WM983) are highly sensitive to this compound with IC50 of <1 μM. Increased levels of cyclin D1 resulting from genomic amplification mediate this compound resistance in B-Raf V600E-mutated melanomas.
In vivo
Administration of SB590885 potently decreases tumorigenesis in murine xenografts established from mutant B-Raf-expressing A375P melanoma cells, and modestly inhibits tumor growth.
References

Applications

Methods Biomarkers Images PMID
Western blot p-MEK / MEK / p-ERK / ERK
S2220-WB1
25879420

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