Fostamatinib disodium hexahydrate
Based on 16 publication(s) in Google Scholar
Fostamatinib (R788) disodium hexahydrate is the oral proagent of the active compound R406. R406 is an orally available and competitive Syk/FLT3 inhibitor with a Ki of 30 nM and an IC50 of 41 nM. R406 also inhibits Lyn (IC50=63 nM) and Lck (IC50=37 nM).
For research use only. We do not sell to patients.
- Purity: 99.46%
- CAS No.: 914295-16-2
- Formula: C23H36FN6Na2O15P
- Molecular Weight:732.51
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Storage:
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Publications Citing Use of MedChemExpress (MCE) Fostamatinib disodium hexahydrate
More- Cancer Cell. 2014 Feb 10;25(2):226-42. [Abstract]
- Nat Med. 2018 Feb;24(2):232-238. [Abstract]
- Blood. 2022 Nov 15.
- Sci Transl Med. 2018 Jul 18;10(450):eaaq1093. [Abstract]
- Blood Cancer J. 2014 Aug 22;4(8):e240. [Abstract]
- BMC Med. 2024 Mar 5;22(1):96. [Abstract]
- EMBO J. 2021 Jun 1;40(11):e106771. [Abstract]
- Br J Cancer. 2026 May 18. [Abstract]
- Biomedicines. 2025 Aug 6;13(8):1919. [Abstract]
- Mol Divers. 2025 Mar 14. [Abstract]
- Hematol Oncol. 2025 Mar;43(2):e70058. [Abstract]
- Metabolomics. 2026 Apr 17;22(3):51.
- Gene. 2020 Jun 20:744:144608. [Abstract]
- Patent. US20230288401A1.
- Research Square Print. 2023 Mar 17.
- Oxid Med Cell Longev. 2021 Feb 25:2021:8819231. [Abstract]
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Cell Proliferation/Viability Assay
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WB
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RT-PCR
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Cell Proliferation/Viability Assay
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Histological Imaging/Staining
Biological Activity
Syk, FLT3[2]
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| Ramos | IC50 |
0.267 μM
Compound: 1
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Cytotoxicity against human Ramos cells
Cytotoxicity against human Ramos cells
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[PMID: 23151054] |
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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CAS No. 914295-16-2
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Appearance Solid
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Molecular Weight 732.51
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Formula C23H36FN6Na2O15P
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Color White to gray
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SMILES
COC1=CC(NC2=NC=C(C(NC3=NC(N4COP(O[Na])(O[Na])=O)=C(C=C3)OC(C)(C)C4=O)=N2)F)=CC(OC)=C1OC.O.O.O.O.O.O
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Synonyms
R788 disodium hexahydrate
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
4°C, sealed storage, away from moisture
* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Publications (16)
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Journal Impact Factor
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Most Recent
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Cancer Cell
2014 Feb 10;25(2):226-42. PMID: 24525236 -
Nat Med
Macrophage extracellular trap formation promoted by platelet activation is a key mediator of rhabdomyolysis-induced acute kidney injury. [Abstract]2018 Feb;24(2):232-238. PMID: 29309057 -
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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 -
Blood Cancer J
Depletion of STAT5 blocks TEL-SYK-induced APMF-type leukemia with myelofibrosis and myelodysplasia in mice. [Abstract]2014 Aug 22;4(8):e240. PMID: 25148222
Fostamatinib disodium hexahydrate purchased from MedChemExpress. Usage Cited in: Blood Cancer J. 2014 Aug 22;4(8):e240. [Abstract]
Hematoxylin and eosin-stained liver slides and reticulin stained BM slides are shown from one Fostamatinib (R788, 40 mg/kg; oral gavage; twice daily) treated mouse versus control mouse. Arrows show liver infiltrates in the control group, which are absent in the treatment group. The results showed that in the Fostamatinib (R788, 40 mg/kg; oral gavage; twice daily) group, virtually no infiltration of granulocyte and megakaryocyte progenitor cells was observed in the liver.
Fostamatinib disodium hexahydrate purchased from MedChemExpress. Usage Cited in: Blood Cancer J. 2014 Aug 22;4(8):e240. [Abstract]
Fostamatinib (R788, 40 mg/kg; oral gavage; twice a day) significantly improved the survival rate of Balb/c mice transplanted with the TEL‑SYK oncogene by inhibiting SYK (Fig. a), effectively reduced the sizes of the spleen and liver (Fig. b), and decreased white blood cell (WBC) counts simultaneously (Fig. c).
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BMC Med
TBK1, a prioritized drug repurposing target for amyotrophic lateral sclerosis: evidence from druggable genome Mendelian randomization and pharmacological verification in vitro. [Abstract]2024 Mar 5;22(1):96. PMID: 38443977
Fostamatinib disodium hexahydrate purchased from MedChemExpress. Usage Cited in: BMC Med. 2024 Mar 5;22(1):96. [Abstract]
CCK-8 assay showed that Fostamatinib (R788, 1.25–20 μM; 5 h) exhibited mild cytotoxicity in a dose-dependent manner.
Fostamatinib disodium hexahydrate purchased from MedChemExpress. Usage Cited in: BMC Med. 2024 Mar 5;22(1):96. [Abstract]
Western blotting analysis of p-p65, p-IRF3, and p-TBK1 from THP-1 cells subjected to MSA-2 stimulation and treated with Fostamatini (R788, 10–20 μM) or AMX (100–200 μM). The results showed that R788 significantly inhibited the levels of phosphorylated TBK1 (p-TBK1) and IRF3 (p-IRF3), with no effect on p65 phosphorylation (p-p65), indicating the specific inhibition on TBK1 within TBK1/IRF3 signaling pathway.
Fostamatinib disodium hexahydrate purchased from MedChemExpress. Usage Cited in: BMC Med. 2024 Mar 5;22(1):96. [Abstract]
RT-qPCR showed the relative levels (normalized with GAPDH) of IFNB, TNFA, and IL6 from NSC-34 cells treated with Fostamatinib (R788, 1.25–20 μM).
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EMBO J
Inhibition of Syk promotes chemical reprogramming of fibroblasts via metabolic rewiring and H2 S production. [Abstract]2021 Jun 1;40(11):e106771. PMID: 33909912 -
Br J Cancer
Circulating tumour cell-derived xenograft as a preclinical platform for metastatic breast cancer. [Abstract]2026 May 18. PMID: 42151560 -
Biomedicines
2025 Aug 6;13(8):1919. PMID: 40868174 -
Mol Divers
Exploiting the Achilles' heel of cancer through a structure-based drug-repurposing approach and experimental validation of top drugs using the TRAP assay. [Abstract]2025 Mar 14. PMID: 40087255 -
Hematol Oncol
Gene Expression Profiling in Acute Myeloid Leukemia Patient Subgroups With High and Low Sensitivity Toward SYK Inhibitors. [Abstract]2025 Mar;43(2):e70058. PMID: 40088478 -
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Gene
PKMYT1 is associated with prostate cancer malignancy and may serve as a therapeutic target. [Abstract]2020 Jun 20:744:144608. PMID: 32234541
Fostamatinib disodium hexahydrate purchased from MedChemExpress. Usage Cited in: Gene. 2020 Jun 20:744:144608. [Abstract]
Cell Counting Kit-8 assay results showing the effect of Fostamatinib (10 μM) on the proliferative capacity of PC-3 cells.
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Oxid Med Cell Longev
Resveratrol Confers Vascular Protection by Suppressing TLR4/Syk/NLRP3 Signaling in Oxidized Low-Density Lipoprotein-Activated Platelets. [Abstract]2021 Feb 25:2021:8819231. PMID: 33728029
Solvent & Solubility
DMSO : 25 mg/mL (34.13 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
H2O : 2 mg/mL (2.73 mM; ultrasonic and warming and heat to 60°C)
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, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
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, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
For the following dissolution methods, please prepare the working solution directly:
It is recommended to prepare fresh solutions and use them promptly within a short period of time.
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.
Add each solvent one by one: 0.5% CMC-Na/saline water
Solubility: 8.33 mg/mL (11.37 mM); Suspended solution; Need ultrasonic
Purity & Documentation
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Data Sheet (278 KB)
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SDS (394 KB)
- English - EN (394 KB)
- Français - FR (394 KB)
- Deutsch - DE (394 KB)
- Norwegian - NO (394 KB)
- Español - ES (394 KB)
- Swedish - SV (394 KB)
- Italian - IT (394 KB)
- Korean - KR (394 KB)
- Portuguese - PT (394 KB)
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Handling Instructions (2659 KB)
References
[1]. Stephen P McAdoo, et al. Fostamatinib Disodium. Drugs Future. 2011;36(4):273. [Content Brief]
[2]. Sylvia Braselmann, et al. R406, an orally available spleen tyrosine kinase inhibitor blocks fc receptor signaling and reduces immune complex-mediated inflammation. J Pharmacol Exp Ther. 2006 Dec;319(3):998-1008. [Content Brief]
[3]. Hoon-Suk Cha , et al. A novel spleen tyrosine kinase inhibitor blocks c-Jun N-terminal kinase-mediated gene expression in synoviocytes. J Pharmacol Exp Ther. 2006 May;317(2):571-8. [Content Brief]
Complete Stock Solution Preparation Table
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, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| H2O / DMSO | 1 mM | 1.3652 mL | 6.8258 mL | 13.6517 mL | 34.1292 mL |
| DMSO | 5 mM | 0.2730 mL | 1.3652 mL | 2.7303 mL | 6.8258 mL |
| 10 mM | 0.1365 mL | 0.6826 mL | 1.3652 mL | 3.4129 mL | |
| 15 mM | 0.0910 mL | 0.4551 mL | 0.9101 mL | 2.2753 mL | |
| 20 mM | 0.0683 mL | 0.3413 mL | 0.6826 mL | 1.7065 mL | |
| 25 mM | 0.0546 mL | 0.2730 mL | 0.5461 mL | 1.3652 mL | |
| 30 mM | 0.0455 mL | 0.2275 mL | 0.4551 mL | 1.1376 mL |
* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.