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50mg | ||
100mg | ||
250mg |
Momelotinib Mesylate, the mesylate salt of Momelotinib (CYT387; CYT11387; LM1149), is an aminopyrimidine analog acting as a novel, potent and ATP-competitive inhibitor of Janus kinases (JAK1/2) with potential antitumor and anti-inflammatory activity. It inhibits JAK1/2 with IC50s of 11 nM/18 nM, and shows ~10-fold selectivity for JAK1/2 over JAK3. CYT 387 is currently undergoing Phase I/II clinical trials for treating myelofibrosis. Momelotinib shows potent in vitro antiproliferative activity and high in vivo antitumor efficacy. It was discovered by high-throughput enzyme and cell-based screening along with the optimization using structure-guided medicinal chemistry.
ln Vitro |
Momelotinib Mesylate is a JAK1/JAK2 inhibitor with an approximate 10-fold selectivity over JAK3 and an IC50 of 11 nM/18 nM. With an IC50 of 1400 nM, metelotritinib suppresses the growth of parental Ba/F3 cells (Ba/F3-wt) triggered by IL-3. Additionally, momelotinib inhibits the growth of cell lines constitutively stimulated by MPL or JAK2 signaling, such as Ba/F3-TEL-JAK2 cells, CHRF-288-11 cells, and Ba/F3-MPLW515L cells, with IC50 values of 200 nM, 1 nM, and 700 nM, respectively. Moreover, momelotinib has been demonstrated to similarly potently block the formation of erythroid colonies in vitro from PV patients who test positive for JAK2V617F, with an IC50 of 2 μM–4 μM[1]. Momelotinib blocks the effects of IL-6 and IGF-1-induced Ras/MAPK and PI3K/AKT signaling. Additionally, in primary multiple myeloma (MM) cells, momelotinib promotes apoptosis as a single agent and synergizes with the traditional anti-MM medicines melphalan and bortezomib[2].
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ln Vivo |
Momelotinib normalizes hematocrit, spleen size, white cell counts, and the physiological levels of inflammatory cytokines in a mouse model of MPN[3].
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Animal Protocol |
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References |
[1]. Pardanani A, et al. CYT387, a selective JAK1/JAK2 inhibitor: in vitro assessment of kinase selectivity and preclinical studies using cell lines and primary cells from polycythemia vera patients. Leukemia, 2009, 23(8), 1441-1445.
[2]. Monaghan KA, et al. The novel JAK inhibitor CYT387 suppresses multiple signalling pathways, prevents proliferation and induces apoptosis in phenotypically diverse myeloma cells. Leukemia, 2011, 25(12), 1891-1899. [3]. Tyner JW, et al. CYT387, a novel JAK2 inhibitor, induces hematologic responses and normalizes inflammatory cytokines in murine myeloproliferative neoplasms. Blood, 2010, 115(25), 5232-5240 |
Molecular Formula |
C24H26N6O5S
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Molecular Weight |
510.565443515778
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CAS # |
1056636-07-7
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Related CAS # |
Momelotinib;1056634-68-4;Momelotinib sulfate;1056636-06-6
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SMILES |
O=C(C1=CC=C(C2=NC(NC3=CC=C(N4CCOCC4)C=C3)=NC=C2)C=C1)NCC#N.O=S(O)(C)=O
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Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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Solubility (In Vivo) |
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.
Injection Formulations
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 :Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). View More
Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). View More
Oral Formulation 3: Dissolved in PEG400  (Please use freshly prepared in vivo formulations for optimal results.) |
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Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
1 mM | 1.9586 mL | 9.7930 mL | 19.5860 mL | |
5 mM | 0.3917 mL | 1.9586 mL | 3.9172 mL | |
10 mM | 0.1959 mL | 0.9793 mL | 1.9586 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration: mg/mL;
Method for preparing DMSO stock solution: mg drug pre-dissolved in μL DMSO (stock solution 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 stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.