Ethambutol

SKU:BHB21902652
Research Validated
Overview
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Ethambutol (CAS 74-55-5) is an antibiotic supplied as a solid. Relevant to Anti-infection research. Molecular formula C10H24N2O2, molecular weight 204.31 g/mol.
Purity 98.0%
CAS Number 74-55-5
Molecular Weight 204.31 g/mol
Form Solid
Storage Powder -20°C; in solvent -80°C
Options selector
Catalog no. Size
HY-B0535-5MG 5 mg
HY-B0535-10MG 10 mg
HY-B0535-25MG 25 mg
HY-B0535-50MG 50 mg
HY-B0535-100MG 100 mg
HY-B0535-200MG 200 mg
HY-B0535-500MG 500 mg
HY-B0535-1MLX10MM 1 mL x 10 mM (in DMSO)
Available Options

Select the variant that best fits your experiment. Availability and lead time may vary by option.

  • Options: Size: 5 mg, 10 mg, 25 mg, 50 mg, 100 mg, 200 mg, 500 mg, 1 mL x 10 mM (in DMSO)
  • Lead time: varies by selected option.
  • Storage: Powder: -20°C, 3 years; 4°C, 2 years. In solvent: -80°C, 6 months; -20°C, 1 month.
  • Shipping: Room temperature in continental US; may vary elsewhere.
  • Upon receipt: transfer to -20°C as soon as possible.
Field Specification
CAS no. 74-55-5
Applications
  • Functional Assay (In Vitro)
Molecular weight 204.31
Molecular formula C10H24N2O2
Purity 98.0%
SMILES CC[C@H](NCCN[C@@H](CC)CO)CO
Form Solid
Storage Powder: -20°C, 3 years; 4°C, 2 years. In solvent: -80°C, 6 months; -20°C, 1 month.
Shipping Room temperature in continental US; may vary elsewhere.
Catalog no. (Mfr.) HY-B0535
Main SKU BHB21902652
Antibiotics

Compound Overview

Ethambutol is an antimycobacterial compound that prevents cell wall formation by inhibiting arabinosyltransferase activity. It can be used to establish animal models of hyperuricemia and optic neuropathy. It is supplied as a white to off-white solid (C10H24N2O2, MW 204.31) at 98.0% purity.

Physical & Chemical Properties

CAS Number 74-55-5
Molecular Formula C10H24N2O2
Molecular Weight 204.31 g/mol
Purity 98.0%
Appearance Solid
Color White to off-white
SMILES CC[C@H](NCCN[C@@H](CC)CO)CO
Signaling Pathway Anti-infection
Solubility In Vitro: H2O: ≥ 200 mg/mL (978.90 mM)
DMSO: 100 mg/mL (489.45 mM; Requires sonication; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO) * "≥" means soluble, but saturation unknown.
Storage Powder: -20°C, 3 years; 4°C, 2 years. In solvent: -80°C, 6 months; -20°C, 1 month.
Shipping Room temperature in continental US; may vary elsewhere.

Literature Cited

Sources cited in this description. Peer-reviewed publications that used this product are listed under References.

[1]. Ethambutol. Tuberculosis (Edinb), 2008. 88(2): p. 102-5.

[2]. Rastogi N, et al. In vitro activities of fourteen antimicrobial agents against drug susceptible and resistant clinical isolates of Mycobacterium tuberculosis and comparative intracellular activities against the virulent H37Rv strain in human macrophages. Curr Microbiol, 1996. 33(3): p. 167-75.

[3]. Kaur D, et al. Khuller, In vitro, ex-vivo and in vivo activities of ethambutol and sparfloxacin alone and in combination against mycobacteria. Int J Antimicrob Agents, 2001. 17(1): p. 51-5.

[4]. Kang L, et al. Total glucosides of herbaceous peony (Paeonia lactiflora Pall.) flower attenuate adenine- and ethambutol-induced hyperuricaemia in rats. J Ethnopharmacol. 2020 Oct 28;261:113054.

[5]. Pham AQ, et al. Pyrazinamide-induced hyperuricemia. P T. 2014 Oct;39(10):695-715.

[6]. Nusanti S, et al. The Effect of Citicoline on Ethambutol Optic Neuropathy: Histopathology and Immunohistochemistry Analysis of Retina Ganglion Cell Damage Level in Rat Model. J Ocul Pharmacol Ther. 2022 Oct;38(8):584-589.

Safety

For Research Use Only. Not for use in diagnostic or therapeutic procedures, and not for human or veterinary use. Handle in accordance with the Safety Data Sheet and your institution's chemical hygiene plan.

In Vitro

SolventSolubilityNotes
H2O≥ 200 mg/mL (978.90 mM)—
DMSO100 mg/mL (489.45 mM)requires sonication; use freshly opened DMSO (absorbed moisture lowers solubility)

Aliquot the stock solution and store it at -80°C (up to 6 months) or -20°C (up to 1 month); avoid repeated freeze-thaw cycles.

If water is used as the stock solvent, dilute to the working solution and sterilize it through a 0.22 μm filter before use.

Data provided by the manufacturer.

Q.Why is there no price on some sizes?
A.Availability and lead time for those sizes are confirmed on inquiry. Send us the size you need and we will come back with price and lead time.
Q.Can this be used in humans or for diagnostics?
A.No. This product is supplied For Research Use Only. It is not for diagnostic or therapeutic procedures and not for human or veterinary use.

Need this compound in a format that drops straight into your assay? We can tailor formulation, chemistry, and documentation so your results stay consistent across runs and re-orders.

  • Format options: solid or pre-dissolved solution (choose solvent), target concentration, aliquots, light/moisture-protected packaging
  • Chemistry options: free base/acid vs salt forms, hydrate/solvate preference, stereoisomer control (single enantiomer or racemate), close analogs
  • Add-on labels & handles: D/¹³C/¹⁵N isotopes (LC-MS/internal standards), azide/alkyne or other functional handles for conjugation
  • QC & documentation: standard COA or enhanced analytical pack (HPLC/LC-MS/NMR), chiral purity, residual solvents, water content (KF), method-specific specs
  • Scale & continuity: mg to gram scale, bulk pricing, lot reservation, repeat-order continuity

To quote quickly, tell us: compound name + CAS/structure (SMILES or mol file), intended assay context, solvent preference, salt/stereochemistry requirements, purity/QC level, and the amount (mg–g).

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Send the CAS or structure and your specs. We can help source it, suggest close equivalents, or discuss custom synthesis with the right QC documentation (RUO).

Identification of a phenyl ester covalent inhibitor of caseinolytic protease and analysis of the ClpP1P2 inhibition in mycobacteria. mLife 2025 Apr 15;4(2):155-168. PMID: 40313980

The acetyltransferase CysE modulates virulence and drug resistance of Mycobacterium tuberculosis by interfering with oxidative stress responses. Commun Biol 2025 Oct 6;8(1):1425. PMID: 41053365

Incorporation of macrophage immune stresses into an intracellular assay of drug tolerance in Mycobacterium tuberculosis. Antimicrob Agents Chemother 2025 Sep 11:e0079525. PMID: 40934365

Investigate Natural Product Indolmycin and the Synthetically Improved Analogue Toward Antimycobacterial Agents. ACS Chem Biol 2022 Jan 21;17(1):39-53. PMID: 34908399

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