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Purity: ≥98%
S-Ruxolitinib, the S-enantiomer of ruxolitinib which is also known as INC424 and INCB18424 or INCB018424, is the first-in class, potent, selective, and orally bioavailable JAK1/2 (Janus-associated kinase) inhibitor with IC50 of 3.3 nM/2.8 nM in cell-free assays, it exhibits >130-fold selectivity for JAK1/2 versus JAK3. Ruxolitinib has potential antineoplastic and immunomodulating activities. It was approved in 2011 by FDA for the treatment of intermediate or high-risk myelofibrosis, a type of myeloproliferative disorder that affects the bone marrow, and for polycythemia vera (PCV) when there has been an inadequate response to or intolerance of hydroxyurea. It selectively binds to and inhibits protein tyrosine kinases JAK 1 and 2, which may lead to a reduction in inflammation and an inhibition of cellular proliferation.
| ln Vitro |
The S enantiomer of rufolitinib (S-Ruxolitinib; 10μM; 12 hours) suppresses the production of ISG, IFIT, and IFITM that is stimulated by IFNβ [1].
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| ln Vivo |
Ruxolitinib (S enantiomer) (S-Ruxolitinib; oral gavage; 30 mg/kg; twice daily, 10–12 hours apart, for 8 weeks) inhibits the growth of hematopoietic cells in MPN [2].
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| Cell Assay |
RT-PCR[1]
Cell Types: Human small airway epithelial cells (SAECs) Tested Concentrations: 10 μM Incubation Duration: 12 hrs (hours) Experimental Results: Suppressed IFNβ-induced expression of ISG, IFIT, and IFITM. |
| Animal Protocol |
Animal/Disease Models: Female wild-type C57BL/6J or Nes-gfp27 mice with myeloproliferative neoplasms (MPNs) in peripheral blood[2]
Doses: 30 mg/kg (in 0.5% hydroxypropylmethylcellulose after solubilisation in DMSO) Route of Administration: po (oral gavage); twice per day separated 10-12 h for 8 weeks Experimental Results: decreased haematopoietic cell expansion in MPN but it did not rescue bone marrow (BM) mesenchymal stem cells (MSCs). |
| References |
[1]. Hye Kyung Lee, et al. JAK inhibitors dampen activation of interferon-stimulated transcription of ACE2 isoforms in human airway epithelial cells. Commun Biol. 2021 Jun 2;4(1):654.
[2]. Lorena Arranz, et al. Neuropathy of haematopoietic stem cell niche is essential for myeloproliferative neoplasms. Nature. 2014 Aug 7;512(7512):78-81. |
| Molecular Formula |
C17H18N6
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| Molecular Weight |
306.365022182465
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| CAS # |
941685-37-6
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| Related CAS # |
Ruxolitinib;941678-49-5;Ruxolitinib phosphate;1092939-17-7;(Rac)-Ruxolitinib-d9;2469553-67-9;Ruxolitinib sulfate;1092939-16-6
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| SMILES |
N#CC[C@@H](C1CCCC1)N2N=CC(C3=C4C(NC=C4)=NC=N3)=C2
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| InChi Key |
HFNKQEVNSGCOJV-HNNXBMFYSA-N
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| InChi Code |
InChI=1S/C17H18N6/c18-7-5-15(12-3-1-2-4-12)23-10-13(9-22-23)16-14-6-8-19-17(14)21-11-20-16/h6,8-12,15H,1-5H2,(H,19,20,21)/t15-/m0/s1
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| Chemical Name |
(3S)-3-Cyclopentyl-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)pyrazol-1-yl]propanenitrile
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| Synonyms |
S Ruxolitinib; INCB-018424, INCB 018424, INCB018424; INC424, INC424, INC-424; INCB18424, INCB 18424, INCB-18424; Jakafi and Jakavi (trade name); (S)-INCB018424; S-Ruxolitinib; SRuxolitinib;
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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 Vitro) |
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| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 3.2640 mL | 16.3201 mL | 32.6403 mL | |
| 5 mM | 0.6528 mL | 3.2640 mL | 6.5281 mL | |
| 10 mM | 0.3264 mL | 1.6320 mL | 3.2640 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.
| NCT Number | Recruitment | interventions | Conditions | Sponsor/Collaborators | Start Date | Phases |
| NCT06310304 | Active, not recruiting NEW |
Drug: Ruxolitinib IR Drug: Ruxolitinib XR |
Healthy Participants | Incyte Corporation | March 26, 2024 | Phase 1 |
| NCT05034822 | Completed | Drug: Ruxolitinib cream | Atopic Dermatitis | Incyte Corporation | December 16, 2021 | Phase 1 |
| NCT04530344 | Completed Has Results | Drug: ruxolitinib Drug: Vehicle |
Vitiligo | Incyte Corporation | September 24, 2020 | Phase 3 |
| NCT04839380 | Completed Has Results | Drug: ruxolitinib cream | Atopic Dermatitis | Incyte Corporation | October 12, 2021 | Phase 2 |
INCB018424 (Ruxolitinib) treatment improves viability and splenomegaly in a JAK2V617F-driven model of malignant disease.Blood.2010 Apr 15;115(15):3109-17.
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Macroscopic and microscopic effects of INCB018424 on spleens from mice inoculated with Ba/F3-EpoR-JAK2V617F cells.Blood.2010 Apr 15;115(15):3109-17. |
INCB018424 does not affect normal hematologic parameters.Blood.2010 Apr 15;115(15):3109-17. |
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