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Masitinib (AB-1010) mesylate is a potent, orally bioavailable and selective inhibitor of c-Kit, IC50 of 200 nM for human recombinant c-Kit. It also inhibits PDGFRα/β, LynB with IC50 values of 540, 800 and 510 nM. 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.
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.
| Molecular Weight | 594.75 |
| Formula | C29H34N6O4S2 |
| CAS Number | 1048007-93-7 |
| Solubility (25°C) | DMSO ≥ 30 mg/mL 1M HCl: 60 mg/mL |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Related c-Kit Products |
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| Imatinib
Imatinib is a multi-target inhibitor of v-Abl, c-Kit and PDGFR with IC50 of 0.6 μM, 0.1 μM and 0.1 μM, respectively. |
| Pexidartinib
Pexidartinib (PLX3397) is an oral, potent mutil-targeted receptor tyrosine kinase inhibitor of CSF-1R, Kit, and Flt3 with IC50 of 20 nM, 10 nM and 160 nM, respectively. |
| Motesanib
Motesanib (AMG-706) is a potent ATP-competitive inhibitor of VEGFR1/2/3 with IC50 of 2 nM/3 nM/6 nM, respectively; similar activity against Kit, ~10-fold more selective for VEGFR than PDGFR and Ret. |
| Ripretinib
Ripretinib (DCC-2618) is an orally bioavailable, selective KIT and PDGFR-alpha inhibitor. |
| DCC-2618
DCC-2618 is an orally bioavailable switch pocket control inhibitor of wild-type and mutated forms of KIT and PDGFR with potential antineoplastic activity. It also inhibits several other kinases, including VEGFR2, TIE2, PDGFR-beta and CSF1R, thereby further inhibiting tumor cell growth. |
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