2. Metabolic Enzyme/Protease Anti-infection
  3. Elastase SARS-CoV
  4. Sivelestat sodium

Sivelestat sodium  (Synonyms: ONO5046-Na; Sodium sivelestat; EI546 sodium; LY544349 sodium)

Cat. No.: HY-17443A Purity: 99.77%
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Sivelestat (EI546) sodium is a competitive inhibitor of human neutrophil elastase, with an IC50 of 44 nM and a Ki of 200 nM. Sivelestat (EI546) sodium has the potential for the study of acute lung injury/acute respiratory distress syndrome or disseminated intravascular coagulation in COVID-19.

For research use only. We do not sell to patients.

CAS No. : 150374-95-1

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Based on 30 publication(s) in Google Scholar

Other Forms of Sivelestat sodium:

Sivelestat sodium Related Antibodies

Top Publications Citing Use of Products

30 Publications Citing Use of MCE Sivelestat sodium

Flow Cytometry
In Vivo Efficacy Study
In Vivo Imaging

    Sivelestat sodium purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 Feb 5;16(1):1378.  [Abstract]

    To evaluate this specific effect of NETosis in the Brd7-deficient context, we treated the mice injected with Brd7-KO cells with either Sivelestat (50 mg/kg) or DMSO starting at the 2-week timepoint, which marks the onset of lung metastatic outgrowth. FACS analysis of dissociated lungs isolated at the 4-week timepoint demonstrated a significant decrease in CTLA4 + CD8 + and PD1 + CD8 + T cells upon Sivelestat treatment.

    Sivelestat sodium purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 Feb 5;16(1):1378.  [Abstract]

    To evaluate this specific effect of NETosis in the Brd7-deficient context, we treated the mice injected with Brd7-KO cells with either Sivelestat (50 mg/kg) or DMSO starting at the 2-week timepoint, which marks the onset of lung metastatic outgrowth.

    Sivelestat sodium purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 Feb 5;16(1):1378.  [Abstract]

    The mice injected with the 4T07-TGL-Brd7 KO cells (Day 0) were i.p. injected with Sivelestat (50 mg/kg) or DMSO control on days -5,-3,-1,1 and on every alternate day thereafter until Week 4. Represent bioluminescence images for the indicated murine cohorts at 30 min, 1 week, and 4 weeks post tumor cell injection.

    Sivelestat sodium purchased from MedChemExpress. Usage Cited in: Nat Commun. 2025 Feb 5;16(1):1378.  [Abstract]

    The mice injected with the 4T07-TGL-Brd7 KO cells (Day 0) were i.p. injected with Sivelestat (50 mg/kg) or DMSO control on days -5,-3,-1,1 and on every alternate day thereafter until Week 4. Line graph showing the normalized photon flux for the indicated murine cohorts over time.

    Sivelestat sodium purchased from MedChemExpress. Usage Cited in: Exp Mol Med. 2025 Sep;57(9):2067-2082.  [Abstract]

    Sivelestat treatment selectively modulates innate immune cell populations in lung and spleen. Data on weight change in the untreated group (infected with SARS-CoV-2 only) and the Sivelestat (10 mg/kg/day, 50 μL, intraperitoneally)/2% DMSO saline treatment group.

    • Biological Activity

    • Purity & Documentation

    • References

    • Customer Review

    Description

    Sivelestat (EI546) sodium is a competitive inhibitor of human neutrophil elastase, with an IC50 of 44 nM and a Ki of 200 nM. Sivelestat (EI546) sodium has the potential for the study of acute lung injury/acute respiratory distress syndrome or disseminated intravascular coagulation in COVID-19[1][2][3][4].

    In Vitro

    Sivelestat (ONO-5046) does not inhibit trypsin, thrombin, plasmin, plasma kallikrein, pancreas kallikrein, chymotrypsin and cathepsin G even at 100 μM[1].
    Sivelestat (ONO-5046) exhibits IC50 values of 44 nM, 36 nM, 19 nM, 37 nM and 49 nM for human, rabbit, rat, hamster and mouse neutrophil elastase, respectively[1].

    MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

    Sivelestat sodium Related Antibodies
    In Vivo

    Sivelestat (ONO-5046, 0.021-2.1 mg/kg, intratracheally) suppresses lung hemorrhage in hamster (ID50 = 82 pg/kg) by intratracheal administration and increase of skin capillary permeability in guinea pig (ID50 = 9.6 mg/kg) by intravenous administration, both of which are induced by human neutrophil elastase[1].
    Sivelestat (10 mg/kg, infusion via the tail vein) ameliorates lung injury after hemorrhagic shock in rats[2].
    Sivelestat (15, 60 mg/kg, ip) prevents ischemia–reperfusion injury in the rat bladder[3].

    MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

    Animal Model: Male Golden hamsters, weighing 90 to 110 g[1].
    Dosage: 0.021-2.1 mg/kg.
    Administration: Intratracheally five min before HNE injection.
    Result: Significantly and dosedependently suppressed the lung hemorrhage.
    Animal Model: Male Sprague-Dawley rats weighing 350-400 g[2].
    Dosage: 10 mg/kg.
    Administration: Continuous infusion via the tail vein at 10 mg/kg/h for 60 min during the resuscitation phase.
    Result: Greatly suppressed lung injury, as revealed by the reduced histological damage.
    Significantly ameliorated HSR-induced lung injury.
    Markedly decreased the levels of TNF-α and iNOS gene.
    Animal Model: Male Sprague Dawley rats, 8 weeks old and weighing 250-320 g[3].
    Dosage: 15 mg/kg or 60 mg/kg.
    Administration: IP.
    Result: Decreased the blood flow in the bladder during reperfusion phase compared to the IR group.
    Clinical Trial
    Molecular Weight

    456.44

    Formula

    C20H21N2NaO7S
    CAS No.
    Appearance

    Solid

    Color

    White to off-white

    SMILES

    CC(C)(C)C(OC1=CC=C(S(=O)(NC2=CC=CC=C2C(NCC(O[Na])=O)=O)=O)C=C1)=O
    Shipping

    Room temperature in continental US; may vary elsewhere.
    Storage

    4°C, sealed storage, away from moisture

    *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

    Solvent & Solubility
    In Vitro: 

    DMSO : 100 mg/mL (219.09 mM; ultrasonic and warming and heat to 60°C; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

    Preparing
    Stock Solutions
    Concentration Solvent Mass 1 mg 5 mg 10 mg
    1 mM 2.1909 mL 10.9543 mL 21.9087 mL
    5 mM 0.4382 mL 2.1909 mL 4.3817 mL
    View the 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.

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    This equation is commonly abbreviated as: C1V1 = C2V2

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    In Vivo Dissolution Calculator
    Please enter the basic information of animal experiments:

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    Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
    Calculation results:
    Working solution concentration: mg/mL
    Purity & Documentation

    Purity: 99.77%

    SDS (393 KB)

    COA (248 KB) LCMS (106 KB)

    Handling Instructions (2659 KB)
    References

    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
    DMSO 1 mM 2.1909 mL 10.9543 mL 21.9087 mL 54.7717 mL
    5 mM 0.4382 mL 2.1909 mL 4.3817 mL 10.9543 mL
    10 mM 0.2191 mL 1.0954 mL 2.1909 mL 5.4772 mL
    15 mM 0.1461 mL 0.7303 mL 1.4606 mL 3.6514 mL
    20 mM 0.1095 mL 0.5477 mL 1.0954 mL 2.7386 mL
    25 mM 0.0876 mL 0.4382 mL 0.8763 mL 2.1909 mL
    30 mM 0.0730 mL 0.3651 mL 0.7303 mL 1.8257 mL
    40 mM 0.0548 mL 0.2739 mL 0.5477 mL 1.3693 mL
    50 mM 0.0438 mL 0.2191 mL 0.4382 mL 1.0954 mL
    60 mM 0.0365 mL 0.1826 mL 0.3651 mL 0.9129 mL
    80 mM 0.0274 mL 0.1369 mL 0.2739 mL 0.6846 mL
    100 mM 0.0219 mL 0.1095 mL 0.2191 mL 0.5477 mL
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    Sivelestat sodium Related Classifications

    Help & FAQs
    • Do most proteins show cross-species activity?

      Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

    Keywords:

    Sivelestat150374-95-1ONO5046-Na Sodium sivelestatEI546LY544349EI 546EI-546LY 544349LY-544349ElastaseSARS-CoVSARS coronavirusAcutelunginjuryischemiareperfusionInhibitorinhibitorinhibit

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