Cat. No.: HY-10209

Masitinib

(Synonyms: AB1010)

5 Cited Publications

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Based on 5 publication(s) in Google Scholar

Masitinib (AB1010) is a potent, orally bioavailable, and selective inhibitor of c-Kit (IC₅₀=200 nM for human recombinant c-Kit). It also inhibits PDGFRα/β (IC₅₀s=540/800 nM), Lyn (IC₅₀= 510 nM for LynB), Lck, and, to a lesser extent, FGFR3 and FAK. Masitinib (AB1010) has anti-proliferative, pro-apoptotic activity and low toxicity.

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Pureté: 99.66%
CAS No.: 790299-79-5
Formule: C₂₈H₃₀N₆OS
Masse moléculaire:498.64

Stockage:

Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 1 year , -20°C, 6 months

Masitinib Chemical Structure

CAS No.: 790299-79-5

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Activité biologique
- Description
- IC₅₀ & Target
- Cellular Effect
- In Vitro
- In Vivo
Chemical Information
Publications (5)
Solvant et solubilité
- In Vitro
- In Vivo
Protocole
Pureté et documentation
Références
Help & FAQs
Classifications
Bioz

Activité biologique

Description

IC₅₀ & Target

IC50: 200 nM (Kit), 540 nM (PDGFRα), 800 nM (PDGFRβ), 510 nM (LynB)^[1]

Voir tous les produits spécifiques à Isoform PDGFR :

Voir tous les produits spécifiques à Isoform Src :

Cellular Effect

Cell Line	Type	Value	Description	References
A549	EC₅₀	3.2 μM Compound: Masitinib	Antiproliferative activity against human A549 cells assessed as inhibition of cell growth measured after 72 hrs by MTT assay Antiproliferative activity against human A549 cells assessed as inhibition of cell growth measured after 72 hrs by MTT assay	[PMID: 37659195]
BMMC	IC₅₀	0.1 μM Compound: 1	Antiproliferative activity against BALB/c mouse BMMC after 48 hrs by MTT assay Antiproliferative activity against BALB/c mouse BMMC after 48 hrs by MTT assay	[PMID: 30078608]
Vero C1008	EC₅₀	3.2 μM Compound: 8	Antiviral activity against SARS-CoV-2 infected in African green monkey Vero E6 cells assessed as reduction in viral replication Antiviral activity against SARS-CoV-2 infected in African green monkey Vero E6 cells assessed as reduction in viral replication	[PMID: 37244162]

In Vitro

Masitinib is a competitive inhibitor against ATP at concentrations ≤500 nM. Masitinib also potently inhibits recombinant PDGFR and the intracellular kinase Lyn, and to a lesser extent, fibroblast growth factor receptor 3. In contrast, masitinib demonstrates weak inhibition of Abl and c-Fms. Masitinib more strongly inhibits degranulation, cytokine production, and bone marrow mast cell migration than imatinib. In Ba/F3 cells expressing human wild-type Kit, masitinib inhibits SCF (stem cell factor)-induced cell proliferation with an IC₅₀ of 150 nM, while the IC₅₀ for inhibition of IL-3-stimulated proliferation is at approximately >10 μM. In Ba/F3 cells expressing PDGFRα, masitinib inhibits PDGF-BB-stimulated proliferation and PDGFRα tyrosine phosphorylation with IC₅₀ of 300 nM. Masitinib also causes inhibition of SCF-stimulated tyrosine phosphorylation of human Kit in mastocytoma cell-lines and BMMC. Masitinib inhibits Kit gain-of-function mutants, including V559D mutant and Δ27 mouse mutant with IC₅₀ of 3 and 5 nM in Ba/F3 cells. Masitinib inhibits the cell proliferation of mastocytoma cell lines including HMC-1α155 and FMA3 with IC₅₀ of 10 and 30 nM, respectively^[1]. Masitinib inhibits cell growth and PDGFR phosphorylation in two novel ISS cell lines, which suggest that Masitinib displays activity against both primary and metastatic ISS cell line and may aid in the clinical management of ISS^[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

Masitinib inhibits tumour growth and increases the median survival time in Δ27-expressing Ba/F3 tumor models at 30 mg/kg, without cardiotoxicity or genotoxicity^[1].
Masitinib (12.5 mg/kg/d, p.o.) increases overall TTP (time-to-tumor progression) compared with placebo in dogs^[3].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Chemical Information

CAS No. 790299-79-5
Appearance Solid
Masse moléculaire 498.64
Formule C₂₈H₃₀N₆OS
Color White to yellow
SMILES

O=C(NC1=CC=C(C(NC2=NC(C3=CC=CN=C3)=CS2)=C1)C)C4=CC=C(CN5CCN(CC5)C)C=C4
Synonyms

AB1010
Livraison

Room temperature in continental US; may vary elsewhere.

Stockage

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	1 year
	-20°C	6 months

Publications (5)

All In Vivo Efficacy StudyIFWBHistological Imaging/Staining

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Journal Impact Factor

Science

Replication and single-cycle delivery of SARS-CoV-2 replicons. [Abstract]

2021 Nov 26;374(6571):1099-1106. PMID: 34648371
Sci Transl Med

PP2A inhibition is a druggable MEK inhibitor resistance mechanism in KRAS-mutant lung cancer cells. [Abstract]

2018 Jul 18;10(450):eaaq1093. PMID: 30021885
Ecotoxicol Environ Saf

Dibutyl phthalate promotes central precocious puberty through primordial follicle activation by downregulating BMP15. [Abstract]

2025 Jul 15:300:118460. PMID: 40472697
Eur J Pharmacol

Therapeutic effects of masitinib on abnormal mechanoreception in a mouse model of tourniquet-induced extremity ischemia-reperfusion. [Abstract]

2021 Nov 15:911:174549. PMID: 34619116

Masitinib purchased from MedChemExpress. Usage Cited in: Eur J Pharmacol. 2021 Nov 15:911:174549. [Abstract]

Protective effects of Mas (Masitinib; 28 mg/kg/day; i.p.; once daily) on mechanoreception during tourniquet/IR were evaluated by paw withdraw threshold at different reperfusion periods in mice. Mas significantly improved paw mechanoreception in the early stages of reperfusion and decreased allodynia at days 14 through 28.

Masitinib purchased from MedChemExpress. Usage Cited in: Eur J Pharmacol. 2021 Nov 15:911:174549. [Abstract]

Nerve fibers and sensory nerve terminals in the skin of mouse paw pads were stained with PGP9.5 and DAPI after Mas (Masitinib; 28 mg/kg/day; i.p.; once daily) treatment in a hind paw tourniquet/IR model. Treatment with Mas significantly mitigated the sensory nerve damage.

Masitinib purchased from MedChemExpress. Usage Cited in: Eur J Pharmacol. 2021 Nov 15:911:174549. [Abstract]

IL-1β and TNFα protein expression in the skin of mouse paw pads was measured by Western blot after Mas treatment (Masitinib; 28 mg/kg/day; i.p.; once daily) in a hind paw tourniquet/IR model. Treatment with Mas markedly reduced the expression of IL-1β and TNFα protein in the skin of paw pads at 7, 14, and 28 days.

Masitinib purchased from MedChemExpress. Usage Cited in: Eur J Pharmacol. 2021 Nov 15:911:174549. [Abstract]

ROS in the dermal papillae of mouse paw pad skin was stained with H2DCFDA and DAPI at days 1 and 3 of reperfusion after Mas treatment (Masitinib; 28 mg/kg/day; i.p.; once daily) in a hind paw tourniquet/IR model. Treatment with Mas significantly reduced the ROS production at 1 and 3 days.
University of Heidelberg

2025.

Solvant et solubilité

In Vitro:

DMSO : 100 mg/mL (200.55 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H₂O : < 0.1 mg/mL (insoluble)

View the Complete Stock Solution Preparation Table

Preparing Stock Solutions

View the Complete Stock Solution Preparation Table

Concentration Solvent Mass

1 mg

5 mg

10 mg

Concentration

Solvent

Mass

1 mM

2.0055 mL

10.0273 mL

20.0545 mL

5 mM

0.4011 mL

2.0055 mL

4.0109 mL

10 mM

0.2005 mL

1.0027 mL

2.0055 mL

Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.

Storage method and period of stock solution: -80°C, 1 year; -20°C, 6 months. When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

Calculateur de molarité

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass Mass

Concentration Concentration

Volume Volume

Molecular Weight Molecular Weight

Calculateur de dilution

Concentration _(start) × Volume _(start) = Concentration _(final) × Volume _(final)

Concentration _(start) Concentration _(start)

Volume _(start) Volume _(start)

Concentration _(final) Concentration _(final)

Volume _(final) Volume _(final)

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

Stock Solution Working Solution

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

Protocol 1

Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline

Solubility: ≥ 2.5 mg/mL (5.01 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

Protocol 2

Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)

Solubility: ≥ 2.5 mg/mL (5.01 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

Protocol 3

Add each solvent one by one: 10% DMSO 90% Corn Oil

Solubility: ≥ 2.5 mg/mL (5.01 mM); Clear solution

This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown). If the continuous dosing period exceeds half a month, please choose this protocol carefully.

Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 mg/mL) to 900 μL Corn oil, and mix evenly.

In Vivo Dissolution Calculator

Please enter the basic information of animal experiments:

Dosage Dosage
mg/kg
Animal Weight (Per Animal) Animal Weight (Per Animal)
g
Dosing Volume (Per Animal) Dosing Volume (Per Animal)
μL
Number of Animals Number of Animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.

Please enter your animal formula composition:

%
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Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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Tween-80 + +
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Saline +

The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).

Working solution concentration: 0.22 mg/mL

Protocole

Kinase Assay^[1]

A 96-well microtitre plateis coated overnight with 0.25 mg/mL poly(Glu,Tyr 4:1), rinsed twice with 250 µL of washing buffer (10 mM phosphate-buffered saline [pH 7.4] and 0.05% Tween 20) and dried for 2 hours at room temperature. Assays are performed at room temperature with a final volume of 50 µL in kinase buffer (10 mM MgCl₂, 1 mM MnCl₂, 1 mM sodium orthovanadate, 20 mM HEPES, pH 7.8) containing ATP at a concentration of at least twice the K_m for each enzyme and an appropriate amount of recombinant enzyme to ensure a linear reaction rate. Reactions are initiated upon introduction of the enzyme and terminated with the addition of one reaction volume (50 μL) of 100 mM EDTA per 5mol/Lurea mix. Plates are washed three times and incubated with 1:30,000 horseradish peroxidase-conjugated anti-phosphotyrosine monoclonal antibody, then washed three times and incubated with tetramethylbenzidine. The final reaction product is quantified by spectrophotometry at 450 nm.

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Assay^[1]

For the assay of Ba/F3 cell proliferation, microtitre plates are seeded with a total of 10⁴ cells/well in 100 μL of RPMI 1640 medium with 10% foetal bovine serum at 37°C. These are supplemented, or not, with either 0.1% conditioned medium from X63-IL-3 cells or 250 ng/mL murine SCF. The murine SCF, which activates Kit, is purified from the conditioned medium of SCF-producing CHO cells. Cells are grown for 48 hours at 37°C with masitinib and then incubated with 10 μL/well of WST-1 reagent for 3 hours at 37°C. The amount of formazan dye formed is quantified by its absorbance at 450 nm using a scanning multiwell spectrophotometer. A blank well without cells is used as a background control for the spectrophotometer.

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Administration^[4]

Male Nog-SCID mice (7 weeks old) are under specific pathogen-free conditions at 20±1°C in a 12-hour light/12-hour dark cycle and ad libitum access to food and filtered water. Mia Paca-2 cells are cultured as described above. At day 0 (D0), mice are injected with 10⁷ Mia Paca-2 cells in 200 µL PBS into the right flank. Tumours are allowed to grow for 1.5 to 4 weeks until the desired tumour size is reached (appr 200 mm³). At day 28, animals are allocated into four treatment groups (n=7 to 8 per group), ensuring that each group's mean body weight and tumour volume are well matched. Treatment is then administered for up to 4 weeks, after which time the animals are sacrificed. Treatments consisted of either: a) daily sterile water for the control group, b) an intraperitoneal (i.p.) injection of 50 mg/kg gemcitabine twice a week, c) daily gavage with 100 mg/kg masitinib, or d) combined i.p injection of 50 mg/kg gemcitabine twice a week and daily gavage with 100 mg/kg masitinib. Tumour size is measured with callipers and tumour volume is estimated using the formula: volume=(length × width²)/2. The tumour growth inhibition ratio is calculated as (100) × (median tumour volume of treated group)/(median tumour volume of control group).

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Pureté et documentation

Select Batch:

Pureté: 99.98%

Assay: 99.98%

ee.: 99.98%

Fiche technique (279 KB)
SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
COA (2659 KB)
Elemental Analysis Report (2659 KB)
HNMR (2659 KB)
CNMR (2659 KB)
RP-HPLC (2659 KB)
NP-HPLC (2659 KB)
MS (2659 KB)
LCMS (2659 KB)
IR (2659 KB)
GC (2659 KB)
OR (2659 KB)
SDS-PAGE (2659 KB)
SEC-HPLC (2659 KB)
Other Report (2659 KB)
Instruction de manipulation (2659 KB)

Références

[1]. Dubreuil P, et al. Masitinib (AB1010), a Potent and Selective Tyrosine Kinase Inhibitor Targeting KIT. PLoS One, 2009, 4(9), e7258.

[2]. Lawrence J, et al. Masitinib demonstrates anti-proliferative and pro-apoptotic activity in primary and metastatic feline injection-site sarcoma cells. Vet Comp Oncol, 2011, doi: 10.1111/j.1476-5829.2011.00291.x. [Content Brief]

[3]. Hahn KA, et al. Masitinib is safe and effective for the treatment of canine mast cell tumors. J Vet Intern Med, 2008, 22(6), 1301-1309. [Content Brief]

[4]. Marech I, et al. Masitinib (AB1010), from canine tumor model to human clinical development: where we are? Crit Rev Oncol Hematol. 2014 Jul;91(1):98-111. [Content Brief]

Help & FAQs

How should lyophilized recombinant proteins be reconstituted and stored?

1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss.

Complete Stock Solution Preparation Table

Storage method and period of stock solution: -80°C, 1 year; -20°C, 6 months. When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg
DMSO	1 mM	2.0055 mL	10.0273 mL	20.0545 mL	50.1364 mL
	5 mM	0.4011 mL	2.0055 mL	4.0109 mL	10.0273 mL
	10 mM	0.2005 mL	1.0027 mL	2.0055 mL	5.0136 mL
	15 mM	0.1337 mL	0.6685 mL	1.3370 mL	3.3424 mL
	20 mM	0.1003 mL	0.5014 mL	1.0027 mL	2.5068 mL
	25 mM	0.0802 mL	0.4011 mL	0.8022 mL	2.0055 mL
	30 mM	0.0668 mL	0.3342 mL	0.6685 mL	1.6712 mL
	40 mM	0.0501 mL	0.2507 mL	0.5014 mL	1.2534 mL
	50 mM	0.0401 mL	0.2005 mL	0.4011 mL	1.0027 mL
	60 mM	0.0334 mL	0.1671 mL	0.3342 mL	0.8356 mL
	80 mM	0.0251 mL	0.1253 mL	0.2507 mL	0.6267 mL
	100 mM	0.0201 mL	0.1003 mL	0.2005 mL	0.5014 mL

Keywords

Masitinib

5 Cited Publications

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Masitinib

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Publications Citing Use of MedChemExpress (MCE) Masitinib

Voir tous les produits spécifiques à Isoform PDGFR

Voir tous les produits spécifiques à Isoform Src

Activité biologique

Chemical Information

Publications (5)

Solvant et solubilité

Protocole

Pureté et documentation

Références

Help & FAQs

Complete Stock Solution Preparation Table

Masitinib Related Classifications

HY-10209 Related Classifications