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Etanidazole (CAS 22668-01-5)

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Alternate Names:
N-(2-Hydroxyethyl)-2-nitro-1H-imidazole-1-acetamide
CAS Number:
22668-01-5
Molecular Weight:
214.18
Molecular Formula:
C7H10N4O4
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Etanidazole is a compound known as a 2-nitroimidazole, which exhibits radiosensitizing properties. By depleting glutathione and inhibiting glutathione transferase, it effectively enhances the cytotoxic effects of ionizing radiation. Etanidazole, derived from ethanolamine, is a monocarboxylic acid amide resulting from the formal condensation of (2-nitro-1H-imidazol-1-yl)acetic acid′s carboxy group with ethanolamine′s amino group.


Etanidazole (CAS 22668-01-5) References

  1. Hypoxia and etanidazole alter radiation-induced apoptosis in HL60 cells but not in MOLT-4 cells.  |  Inanami, O., et al. 2002. Int J Radiat Biol. 78: 267-74. PMID: 12020438
  2. Sustained release of etanidazole from spray dried microspheres prepared by non-halogenated solvents.  |  Wang, FJ. and Wang, CH. 2002. J Control Release. 81: 263-80. PMID: 12044566
  3. Effects of fabrication conditions on the characteristics of etanidazole spray-dried microspheres.  |  Wang, FJ. and Wang, CH. 2002. J Microencapsul. 19: 495-510. PMID: 12396386
  4. Distribution of etanidazole into human brain tumors: implications for treating high grade gliomas.  |  Hurwitz, SJ., et al. 1992. Int J Radiat Oncol Biol Phys. 22: 573-6. PMID: 1531216
  5. Radiosensitization of paclitaxel, etanidazole and paclitaxel+etanidazole nanoparticles on hypoxic human tumor cells in vitro.  |  Jin, C., et al. 2007. Biomaterials. 28: 3724-30. PMID: 17509678
  6. Technique, pharmacokinetics, toxicity, and efficacy of intratumoral etanidazole and radiotherapy for treatment of spontaneous feline oral squamous cell carcinoma.  |  Evans, SM., et al. 1991. Int J Radiat Oncol Biol Phys. 20: 703-8. PMID: 1825993
  7. Effect of pH, oxygenation, and temperature on the cytotoxicity and radiosensitization by etanidazole.  |  Teicher, BA., et al. 1991. Int J Radiat Oncol Biol Phys. 20: 723-31. PMID: 1825994
  8. A comparison of radiosensitization by etanidazole and pimonidazole in mouse tumors.  |  Stone, HB., et al. 1991. Int J Radiat Oncol Biol Phys. 20: 987-95. PMID: 1827089
  9. Evaluation of the in vivo radiosensitizing activity of etanidazole using tumor-bearing chick embryo.  |  Abe, C., et al. 2011. J Radiat Res. 52: 208-14. PMID: 21436611
  10. Etanidazole as a modulator of combined modality therapy in the rat 9l-gliosarcoma.  |  Teicher, B., et al. 1992. Int J Oncol. 1: 625-30. PMID: 21584591
  11. Addition of misonidazole, etanidazole, or hyperthermia to treatment with fluosol-DA/carbogen/radiation.  |  Teicher, BA., et al. 1989. J Natl Cancer Inst. 81: 929-34. PMID: 2525198
  12. Modification of the aerobic cytotoxicity of etanidazole.  |  Palayoor, ST., et al. 1994. Int J Radiat Oncol Biol Phys. 29: 289-93. PMID: 8195021
  13. Effect of BSO and etanidazole on neurofilament degradation in neonatal rat spinal cord cultures.  |  Palayoor, ST., et al. 1996. Br J Cancer Suppl. 27: S117-21. PMID: 8763862
  14. Solubility behavior, phase transition, and structure-based nucleation inhibition of etanidazole in aqueous solutions.  |  Maurin, MB., et al. 1996. Pharm Res. 13: 1401-5. PMID: 8893282

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Etanidazole, 25 mg

sc-499119
25 mg
$408.00