Sivelestat

Alias: ONO5046, LY544349, EI546; ONO 5046; ONO5046; ONO-5046; LY544349; LY-544349; LY 544349; EI 546 sodium salt hydrate, Elaspol sodium salt hydrate, LY 544349 sodium salt hydrate, Trade name: Elaspol.
Cat No.:V2638 Purity: ≥98%
Sivelestat (also known as ONO5046; LY544349; EI546) is a novel, potent and competitive inhibitor of human neutrophil elastase (HNE) with IC50value of44 nM andKi of 200 nM; it also inhibited leukocyte elastase obtained from rabbit, rat, hamster and mouse.
Sivelestat Chemical Structure CAS No.: 127373-66-4
Product category: SARS-CoV
This product is for research use only, not for human use. We do not sell to patients.
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Other Forms of Sivelestat:

  • Sivelestat sodium
  • Sivelestat sodium tetrahydrate
Official Supplier of:
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

Sivelestat (also known as ONO5046; LY544349; EI546) is a novel, potent and competitive inhibitor of human neutrophil elastase (HNE) with IC50 value of 44 nM and Ki of 200 nM; it also inhibited leukocyte elastase obtained from rabbit, rat, hamster and mouse. ONO-5046 did not inhibit trypsin, thrombin, plasmin, plasma kallikrein, pancreas kallikrein, chymotrypsin and cathepsin G even at 100 microM. In in vivo studies, ONO-5046 suppressed lung hemorrhage in hamster by intratracheal administration and increase of skin capillary permeability in guinea pig by intravenous administration. It is used in the treatment of acute respiratory failure. Preliminary studies show Sivelestat may also improve neuropathic pain.

Biological Activity I Assay Protocols (From Reference)
ln Vitro

In vitro activity: Sivelestat suppresses both adhesion and transmigration of neutrophils to the endothelium


Kinase Assay: Sivelestat(ONO5046; LY544349; EI546) is a competitive inhibitor of human neutrophil elastase(IC50 = 44 nM; Ki=200 nM); also inhibited leukocyte elastase obtained from rabbit, rat, hamster and mouse.


Cell Assay: HUVEC are grown to confluence on fibronectin (25 μg/mL) coated Falcon cell culture inserts. Neutrophils stimulated by PAF (0.1 mM) are added to the HUVEC monolayers (upper chamber). The upper chamber is exposed to 2 mL of HUMEDIA and rehydrated at 37 ℃ for 1 h in the absence or the presence (50 μg/mL) of sivelestat. Subsequently, the upper chamber is removed and the fluid in the lower chamber is collected.

ln Vivo
Intraoperative administration of sivelestat effectively reduced neutrophil induction and activation in the lung and improved oxygenation after cardiopulmonary bypass in a piglet model.By inhibiting neutrophil elastase, sivelestat has a direct action to the accumulated and activated leucocytes, offering efficient protection against the production of oxygen radicals and cytokines.
Animal Protocol
Dissolved in 0.9% saline solution; 2 mg/kg/h; Intraoperative administration
Neonatal piglets
References
Interact Cardiovasc Thorac Surg.2008 Oct;7(5):785-8;Dig Dis Sci.2014 Apr;59(4):787-94.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C20H22N2O7S
Molecular Weight
434.46
Exact Mass
434.11
Elemental Analysis
C, 55.29; H, 5.10; N, 6.45; O, 25.78; S, 7.38
CAS #
127373-66-4
Related CAS #
Sivelestat sodium;150374-95-1;Sivelestat sodium tetrahydrate;201677-61-4
Appearance
Solid powder
SMILES
CC(C)(C)C(OC1=CC=C(S(=O)(NC2=CC=CC=C2C(NCC(O)=O)=O)=O)C=C1)=O
InChi Key
BTGNGJJLZOIYID-UHFFFAOYSA-N
InChi Code
InChI=1S/C20H22N2O7S/c1-20(2,3)19(26)29-13-8-10-14(11-9-13)30(27,28)22-16-7-5-4-6-15(16)18(25)21-12-17(23)24/h4-11,22H,12H2,1-3H3,(H,21,25)(H,23,24)
Chemical Name
N-{2-[({4-[(2,2-Dimethylpropanoyl)oxy]phenyl}sulfonyl)amino]benzoyl}glycine
Synonyms
ONO5046, LY544349, EI546; ONO 5046; ONO5046; ONO-5046; LY544349; LY-544349; LY 544349; EI 546 sodium salt hydrate, Elaspol sodium salt hydrate, LY 544349 sodium salt hydrate, Trade name: Elaspol.
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: This product requires protection from light (avoid light exposure) during transportation and storage.
Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO : 87~100 mg/mL ( 200.24~230.17 mM )
Ethanol : 3.03 ~8 mg/mL(~6.97 mM )
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (5.75 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.5 mg/mL (5.75 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

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Solubility in Formulation 3: ≥ 2.5 mg/mL (5.75 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.


Solubility in Formulation 4: 5% DMSO+ 40% PEG300+ 5% Tween 80+ 50% ddH2O: 3.25mg/ml (7.48mM)

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.3017 mL 11.5085 mL 23.0171 mL
5 mM 0.4603 mL 2.3017 mL 4.6034 mL
10 mM 0.2302 mL 1.1509 mL 2.3017 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.

Calculator

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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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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.

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