Name: Eltrombopag (SB-497115)
Brand: Selleck Chemicals
SKU: S4502
Availability: InStock
Rating: 5 (10 reviews)

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Quality Control

Batch: Purity: 99.99%

99.99

Related Targets	PD-1/PD-L1 CXCR STING AhR Immunology & Inflammation related CD markers Interleukins Anti-infection Antioxidant COX
Other TpoR Inhibitors	Butyzamide

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Incubation Time	Activity Description	PMID
Ba/F3	Function assay		Agonist activity at human thrombopoietin receptor expressed in mouse Ba/F3 cells by kinase activation based reporter gene assay, EC50=0.038μM	18783949
Ba/F3	Function assay		Agonist activity at human thrombopoietin receptor in Ba/F3 cells assessed as activation of Stat5 response element-driven reporter gene expression, EC50=0.038μM	18778936
HEK293/PDZK1	Function assay		Inhibition of OATP2B1-mediated [3H]estrone-3-sulfate uptake in human OATP2B1 expressing HEK293/PDZK1 cells by scintillation counting, Ki=8.48μM	21422191
HEK293/PDZK1	Function assay		Inhibition of OATP1B1-mediated [3H]estrone-3-sulfate uptake in human OATP1B1 expressing HEK293/PDZK1 cells by scintillation counting, Ki=14.9μM	21422191
HEK293/PDZK1	Function assay		Inhibition of OATP1B3-mediated [3H]estradiol 17beta-glucuronide uptake in human OATP1B3 expressing HEK293/PDZK1 cells by scintillation counting, Ki=25.6μM	21422191
HEK293/PDZK1	Function assay		Inhibition of OATP1B3-mediated [3H]estradiol 17beta-glucuronide uptake in human OATP1B3 expressing HEK293/PDZK1 cells by scintillation counting	21422191
HEK293/PDZK1	Function assay		Inhibition of OCT1-mediated [14C]tetraethylammonium uptake in human OCT1 expressing HEK293/PDZK1 cells by scintillation counting	21422191
HEK293/PDZK1	Function assay	30 mins	Drug uptake in human OATP1B1 expressing HEK293/PDZK1 cells at 37 degC for 30 mins	21422191
HEK293/PDZK1	Function assay	30 mins	Drug uptake in human OATP2B1 expressing HEK293/PDZK1 cells at 37 degC for 30 mins	21422191
HEK293/PDZK1	Function assay	30 mins	Drug uptake in human OCT1 expressing HEK293/PDZK1 cells at 37 degC for 30 mins	21422191
HEK293/PDZK1	Function assay		Inhibition of OATP1B1-mediated [3H]estrone-3-sulfate uptake in human OATP1B1 expressing HEK293/PDZK1 cells by scintillation counting	21422191
HEK293/PDZK1	Function assay		Inhibition of OATP2B1-mediated [3H]estrone-3-sulfate uptake in human OATP2B1 expressing HEK293/PDZK1 cells by scintillation counting	21422191
DAOY	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for DAOY cells	29435139
A673	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for A673 cells	29435139
SK-N-MC	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells	29435139
BT-37	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for BT-37 cells	29435139
NB-EBc1	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells	29435139
Saos-2	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Saos-2 cells	29435139
OHS-50	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for OHS-50 cells	29435139
MG 63 (6-TG R)	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for MG 63 (6-TG R) cells	29435139
Rh41	qHTS assay		qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for Rh41 cells	29435139
VERO-E6	Function assay	48 hrs	Toxicity CC50 against VERO-E6 cells determined at 48 hours by high content imaging (same conditions as 2_LEY without exposure to 0.01 MOI SARS CoV-2 virus), CC50=3.26μM	ChEMBL
Vero	Antiviral assay	24 hrs	Antiviral activity against SARS-CoV-2 (viral titer) measured by plaque assay in Vero cells at MOI 0.0125 after 24 hr, IC50=8.27μM	ChEMBL
Click to View More Cell Line Experimental Data

Solubility

In vitro
Batch:

DMSO : 11 mg/mL (24.86 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.350mg/ml (0.79mM)	Taking the 1 mL working solution as an example, add 50 μL of 7 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	0.050mg/ml (0.11mM)	Taking the 1 mL working solution as an example, add 50 μL of 1 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

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Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

%

% Tween 80

% ddH₂O

% DMSO

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Calculation results:

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.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	442.47	Formula	C₂₅H₂₂N₄O₄	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	496775-61-2	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	SB-497115			Smiles	CC1=C(C=C(C=C1)N2C(=O)C(=C(N2)C)N=NC3=CC=CC(=C3O)C4=CC(=CC=C4)C(=O)O)C

Mechanism of Action

Targets/IC₅₀/Ki	thrombopoietin receptor (TpoR)
In vitro	Eltrombopag demonstrates a half maximal effective concentration (EC50) of 0.27 μM in murine BAF3 cells transfected with the luciferase reporter gene under direction of the STAT-activated IRF-1 promoter and human TpoR (BAF3/IRF-1/hTpoR). This compound activates the receptor by association with metal ions (i.e., Zn2+) and specific amino acids within the transmembrane and juxtamembrane domains of the TpoR. It (30 μM) results in activation of STAT5 in N2C-Tpo cells, as detected with an antiphospho-STAT5 antibody on Western blots. This chemical stimulates proliferation after a 2-day incubation with an EC50 of 0.03 μM in a BrdU assay conducted in BAF3/hTpoR cells. It also induces differentiation of hematopoietic stem cells into committed megakaryocyte progenitor cells. This compound increases the differentiation of bone marrow CD34+ cells into CD41+ megakaryocytes in a dose-dependent manner with an EC50 of 0.1 μM. It inhibits N2C-Tpo cell and HEL92.1.7 cell proliferating with IC50 of 20.7 μg/mL and 2.3 μg/mL. This chemical (20 μg/mL) leads to a decreased cell division rate, a block in G(1) phase of cell cycle, and increased differentiation in human and murine leukemia cells. It (5 μg/mL) shows clear signs of differentiation, significant changes in the organization of the nuclear contents, and an increase in the cytoplasm/nucleus ratio in HL60 cells. This compound (5 μg/mL) causes an increase in CD11b, which is consistent with a premacrophage state in U937 cells, and also causes an increase in CD11b in URE cells. It leads to a reduction in free intracellular iron in leukemic cells in a dose-dependent manner in HL60 cells.
In vivo	Eltrombopag (10 mg/kg per day) increases platelet counts over twofold approximately 1 week after the last dose for one chimpanzee and approximately 1.5-fold for the other two chimpanzees. This compound (1 mg/mL) prolongs survival in mouse models of leukemia.
References	[1] https://pubmed.ncbi.nlm.nih.gov/19038790/ [2] https://pubmed.ncbi.nlm.nih.gov/20202683/ [3] https://pubmed.ncbi.nlm.nih.gov/22627766/

Applications

Methods	Biomarkers	Images	PMID
Western blot	p-STAT5 / STAT5 / p-AKT / AKT / p-ERK / ERK p-RB / RB / CDK4 / CDK6 / Cyclin D1		30156363
Growth inhibition assay	Cell viability		31564981

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT05961410	Recruiting	Lymphoma\|Peripheral Blood Stem Cell Transplantation	National Taiwan University Hospital\|Novartis	August 15 2023	Phase 2
NCT05653219	Recruiting	Primary Immune Thrombocytopenia	Novartis Pharmaceuticals\|Novartis	January 21 2023	Phase 3
NCT05049668	Enrolling by invitation	Severe Aplastic Anemia	European Society for Blood and Marrow Transplantation	October 2021	--

Tech Support

Handling Instructions

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Eltrombopag (SB-497115) TpoR Agonist

Chemical Structure

Molecular Weight: 442.47