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Etzadroxil (ethyl 2-ethylbutyrate; Ethyl 2-Ethylbutyrate)

Alias: Ethyl 2-ethylbutanoate; Ethyl 2-ethylbutyrate; 2-Ethyl-n-butyric acid ethyl ester; Butanoic acid, 2-ethyl-, ethyl ester; ...; 2983-38-2;
Cat No.:V35246 Purity: ≥98%
Etzadroxil (Ethyl 2-Ethylbutyrate) is a volatile ester compound.
Etzadroxil (ethyl 2-ethylbutyrate; Ethyl 2-Ethylbutyrate)
Etzadroxil (ethyl 2-ethylbutyrate; Ethyl 2-Ethylbutyrate) Chemical Structure CAS No.: 2983-38-2
Product category: Bacterial
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
5g
Other Sizes
Official Supplier of:
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Product Description
Etzadroxil (Ethyl 2-Ethylbutyrate) is a volatile ester compound. Sulopenem Etzadroxil is an oral ester precursor form of Sulopenem, an antibiotic with broad spectrum activity against Gram-positive (Gram+) and Gram-negative (Gram+) bacteria.
Etzadroxil (ethyl 2-ethylbutyrate; Ethyl 2-Ethylbutyrate) (CAS#: 2983-38-2) is a volatile ester compound. It serves as the oral ester prodrug form of Sulopenem, an antibiotic with broad-spectrum activity against Gram-positive and Gram-negative bacteria. Sulopenem Etzadroxil is an orally available prodrug designed to improve the bioavailability of Sulopenem.
Biological Activity I Assay Protocols (From Reference)
Targets
Flavoring Agents; ester precursor for antibiotic Sulopenem
Etzadroxil itself is not the active antibacterial agent but rather a prodrug. Its target is the bacterial cell wall synthesis machinery, as it is converted to Sulopenem, which is a beta-lactam antibiotic. Sulopenem inhibits penicillin-binding proteins (PBPs), which are essential for bacterial cell wall synthesis. This leads to bacterial cell death.
ln Vitro
Sulopenem is accessible as an oral ester prodrug called Sulopenem Etzadroxil. The ester bond is broken during oral sulopenem etzadroxil administration, yielding active sulopenem[2].
In vitro, Etzadroxil is converted to Sulopenem, which exhibits broad-spectrum activity against Gram-positive and Gram-negative bacteria. The prodrug form is designed to be orally available, allowing for convenient administration. The antibacterial activity is attributed to the active metabolite Sulopenem.
ln Vivo
In vivo, Sulopenem Etzadroxil is an orally available prodrug of Sulopenem. It is used to treat infections caused by multi-drug resistant bacteria, such as urinary tract infections. The prodrug is absorbed from the gastrointestinal tract and converted to the active antibiotic Sulopenem, which then exerts its antibacterial effects.
Enzyme Assay
Specific in vitro enzyme/receptor binding assay protocols for Etzadroxil are not applicable, as it is a prodrug. Its activity is assessed by measuring the antibacterial activity of Sulopenem after conversion. Standard antimicrobial susceptibility testing is used to determine the minimum inhibitory concentration (MIC) of Sulopenem against various bacterial strains.
Cell Assay
Cellular assays for Etzadroxil are not typically performed, as its activity is antibacterial rather than cytotoxic. Antibacterial activity is assessed using standard broth microdilution methods to determine MIC values against bacterial strains. The prodrug's conversion to Sulopenem is confirmed in vitro using stability studies.
Animal Protocol
In vivo animal protocols for Etzadroxil involve administering the compound orally to animal models of bacterial infection, such as mouse models of urinary tract infection. The efficacy of the prodrug is evaluated by measuring bacterial load in tissues and monitoring survival. These studies confirm the prodrug's ability to deliver active Sulopenem.
ADME/Pharmacokinetics
Pharmacokinetic (PK) properties of Etzadroxil are related to its role as a prodrug. It is designed to be orally absorbed and converted to Sulopenem. The prodrug form improves the oral bioavailability of Sulopenem, which is poorly absorbed. The PK profile of Sulopenem is determined after administration of the prodrug.
Toxicity/Toxicokinetics
Toxicity data for Etzadroxil are likely related to the toxicity of Sulopenem. As a beta-lactam antibiotic, it is generally well-tolerated, but can cause allergic reactions and gastrointestinal disturbances. The compound is intended for research use only and is not approved for human therapeutic use.
References
[1]. Determination of volatile compounds in cider spirits by gas chromatography with direct injection. J Chromatogr Sci. 2007 Aug;45(7):428-34.
[2]. Interscience Conference on Antimicrobial Agents and Chemotherapy--49th annual meeting. Part 2. 12-15 September 2009, San Francisco, CA, USA. IDrugs. 2009 Nov;12(11):670-2.
Additional Infomation
2-Ethyl butyrate is a fatty acid ester. This paper describes two gas chromatography-direct injection-based analytical methods for the quantitative analysis of volatile compounds (acetals, aldehydes, esters, alcohols, and volatile phenols) in apple brandy. Based on the common concentrations of volatile compounds in the samples, they were divided into major volatile compounds (15) and minor volatile compounds (24). Parameters commonly used in method validation were evaluated. Correlation coefficients were calculated to assess linearity, and all results were greater than 0.999. The limits of detection (LODs) for major volatile compounds ranged from 0.325 mg/L (1-propanol) to 1.663 mg/L (methanol), and the LODs for minor volatile compounds ranged from 0.086 mg/L (ethyl 2-methylbutyrate) to 0.332 mg/L (ethyl tetradecanoate). The average recoveries of the major volatile components ranged from 109% (ethyl lactate) to 95% (1-butanol), and the average recoveries of the minor volatile components ranged from 109% (1-octen-3-ol) to 94% (ethyl 2-methylbutyrate), thus confirming the accuracy of the two methods. The reproducibility of the major volatile components was less than 5.4% (furfural) in all cases, and the reproducibility of the minor volatile components was less than 9.6% (hexyl acetate). In addition, the accuracy of these methods was evaluated by analyzing one certified whisky and five interlaboratory comparison samples, with results that were generally consistent with previous values. [1]
Etzadroxil (Ethyl 2-Ethylbutyrate) is an oral prodrug of Sulopenem, a broad-spectrum antibiotic. It is used in research to improve the oral bioavailability of Sulopenem. The compound is not currently in clinical trials and is intended for research purposes.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C8H16O2
Molecular Weight
144.21
Exact Mass
144.115
CAS #
2983-38-2
PubChem CID
76326
Appearance
Colorless to light yellow liquid(Density:0.864 g/cm3)
Density
0.876g/cm3
Boiling Point
152ºC
Melting Point
149-152ºC
Flash Point
46.7ºC
Vapour Pressure
2.91mmHg at 25°C
Index of Refraction
1.411
LogP
1.985
Hydrogen Bond Donor Count
0
Hydrogen Bond Acceptor Count
2
Rotatable Bond Count
5
Heavy Atom Count
10
Complexity
95.4
Defined Atom Stereocenter Count
0
SMILES
CCC(CC)C(=O)OCC
InChi Key
MJGSLNIPTRPYJV-UHFFFAOYSA-N
InChi Code
InChI=1S/C8H16O2/c1-4-7(5-2)8(9)10-6-3/h7H,4-6H2,1-3H3
Chemical Name
ethyl 2-ethylbutanoate
Synonyms
Ethyl 2-ethylbutanoate; Ethyl 2-ethylbutyrate; 2-Ethyl-n-butyric acid ethyl ester; Butanoic acid, 2-ethyl-, ethyl ester; ...; 2983-38-2;
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

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 : 100 mg/mL (693.43 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (17.34 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 (17.34 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 (17.34 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.


 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 6.9343 mL 34.6717 mL 69.3433 mL
5 mM 1.3869 mL 6.9343 mL 13.8687 mL
10 mM 0.6934 mL 3.4672 mL 6.9343 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

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

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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
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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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.

Clinical Trial Information
NCT06733675 2025-01-07 PHASE1
NCT06665555 2024-11-04 PHASE1
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