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FM-381
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Catalog No. T5091Cas No. 2226521-65-7
Alias FM381
FM381 is a potent covalent reversible inhibitor of JAK3. FM-381 has an IC50 of 127 pM for JAK3, with 410, 2700 and 3600-fold selectivity over JAK1, JAK2 and TYK2, respectively.
FM-381
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Purity: 98.44%
Catalog No. T5091Alias FM381Cas No. 2226521-65-7
FM381 is a potent covalent reversible inhibitor of JAK3. FM-381 has an IC50 of 127 pM for JAK3, with 410, 2700 and 3600-fold selectivity over JAK1, JAK2 and TYK2, respectively.
| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 1 mg | $42 | In Stock | In Stock | |
| 2 mg | $59 | In Stock | In Stock | |
| 5 mg | $98 | In Stock | In Stock | |
| 10 mg | $137 | In Stock | In Stock | |
| 25 mg | $235 | In Stock | In Stock | |
| 50 mg | $355 | In Stock | In Stock | |
| 100 mg | $538 | - | In Stock | |
| 1 mL x 10 mM (in DMSO) | $115 | In Stock | In Stock |
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In Stock Estimated shipping dateUSA Warehouse[1-2 days] Global Warehouse[5-7 days]
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Purity:98.44%
Color:Yellow
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Product Introduction
Bioactivity
Chemical Properties
Storage & Solubility Information
| Description | FM381 is a potent covalent reversible inhibitor of JAK3. FM-381 has an IC50 of 127 pM for JAK3, with 410, 2700 and 3600-fold selectivity over JAK1, JAK2 and TYK2, respectively. |
| Targets&IC50 | JAK3:127 pM |
| In vitro | FM-381 is a potent covalent reversible inhibitor of JAK3 targeting the unique Cys909 at the gatekeeper (GK) position +7 in JAK3 exhibited apparent JAK3 IC50 values of 0.127 nM, with 400-, 2700- and 3600-fold selectivity over JAK1, JAK2 and TYK2, respectively. FM-381 was found to be inactive in a selectivity panel of frequently hit BRDs (BRD4, BRPF, CECR, FALZ, TAF1, BRD9). FM-381 shows an apparent EC50 of 100 nM in a dose dependent BRET assay and blocks IL2-stimulated (JAK3/JAK1 dependent) STAT5 phosphorylation at 100 nM, but not JAK3 independent IL6-stimulated (JAK1/2/TYK dependent) STAT3 signalling in Human CD4+ T cells up to 1 μM [1]. |
| Cell Research | CD4+ T Cell cytokine stimulation assay is performed. T cells are purified from peripheral blood mononuclear cells from human donors. Equal numbers of cells are incubated for 1 hr with JAK inhibitors (FM381) (0, 10, 50, 100, 300 nM) or DMSO control and stimulated with cytokines for 30 min. The cells are lysed, and the proteins are separated via PAGE and transferred to a polyvinylidene fluoride membrane. The proteins of interest are blotted with specific antibodies and visualized with an infrared imaging system[1]. |
| Synonyms | FM381 |
| Molecular Weight | 428.49 |
| Formula | C24H24N6O2 |
| Cas No. | 2226521-65-7 |
| Smiles | CN(C)C(=O)C(=C\c1ccc(o1)-c1nc2cnc3[nH]ccc3c2n1C1CCCCC1)\C#N |
| Relative Density. | no data available |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. | |||||||||||||||||||||||||
| Solubility Information | H2O: Insoluble DMSO: 12.5 mg/mL (29.17 mM), Sonication is recommended.  | |||||||||||||||||||||||||
Solution Preparation Table | ||||||||||||||||||||||||||
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In Vivo Formulation Calculator (Clear solution)
Please enter your animal experiment information in the following box and click Calculate to obtain the stock solution preparation method and in vivo formula preparation method:
For example, if the intended dosage is 10 mg/kg for animals weighing 20 g , with a dosing volume of 100 μL per animal, and a total of 10 animals are to be administered, using a formulation of 
10% DMSO+ 40% PEG300+ 5% Tween 80+ 45% Saline/PBS/ddH2O , the resulting working solution concentration would be 2 mg/mL.Stock Solution Preparation:
Dissolve 2 mg of the compound in 100 μL DMSO to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
Preparation of the In Vivo Formulation:
1) Add 100 μL of the DMSO stock solution to 400 μL PEG300 and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O and mix thoroughly until a homogeneous solution is obtained.
This example is provided solely to demonstrate the use of the In Vivo Formulation Calculator and does not constitute a recommended formulation for any specific compound. Please select an appropriate dissolution and formulation strategy based on your experimental model and route of administration.
Dose Conversion
You can also refer to dose conversion for different animals. More Dose Conversion
Tech Support
Please see Inhibitor Handling Instructions for more frequently ask questions. Topics include: how to prepare stock solutions, how to store products, and cautions on cell-based assays & animal experiments, etc
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