Date published: 2026-6-9

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Oseltamivir Acid (CAS 187227-45-8)

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Alternate Names:
(3R,4R,5S)-4-(Acetylamino)-5-amino-3-(1-ethylpropoxy)-1-cyclohexence-1-carboxylic Acid; Oseltamivir Carboxylic Acid
Application:
Oseltamivir Acid is a metabolite of oseltamivir
CAS Number:
187227-45-8
Purity:
≥95%
Molecular Weight:
284.35
Molecular Formula:
C14H24N2O4
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Oseltamivir Acid is a metabolite of oseltamivir, an antiviral compound. It acts as a competitive inhibitor of influenza neuraminidases A and B (IC50 = 0.1 to 4.9 nM for both enzymes). This compound inhibits neuraminidase-mediated cleavage of host cell sialic acids, which interact with newly synthesised virions from the host cell. This prevents virion budding from the host, resulting in inhibition of virion release and viral infection overall.


Oseltamivir Acid (CAS 187227-45-8) References

  1. In vitro anti-influenza viral activities of constituents from Caesalpinia sappan.  |  Liu, AL., et al. 2009. Planta Med. 75: 337-9. PMID: 19148862
  2. Mixture toxicity of the antiviral drug Tamiflu((R)) (oseltamivir ethylester) and its active metabolite oseltamivir acid.  |  Escher, BI., et al. 2010. Aquat Toxicol. 96: 194-202. PMID: 19939473
  3. Removal of the antiviral agent oseltamivir and its biological activity by oxidative processes.  |  Mestankova, H., et al. 2012. Environ Pollut. 161: 30-5. PMID: 22230064
  4. [A study on the standard of influenza neuraminidase inhibition assay].  |  Yang, F., et al. 2012. Yao Xue Xue Bao. 47: 730-3. PMID: 22919719
  5. Cell-permeable probe for identification and imaging of sialidases.  |  Tsai, CS., et al. 2013. Proc Natl Acad Sci U S A. 110: 2466-71. PMID: 23359711
  6. Occurrence of selected pharmaceuticals at drinking water purification plants in Japan and implications for human health.  |  Simazaki, D., et al. 2015. Water Res. 76: 187-200. PMID: 25835589
  7. Anti-Influenza Virus Activity and Constituents. Characterization of Paeonia delavayi Extracts.  |  Li, J., et al. 2016. Molecules. 21: PMID: 27571059
  8. Development and application of an in-cell cleanup pressurized liquid extraction with ultra-high-performance liquid chromatography-tandem mass spectrometry to detect prohibited antiviral agents sensitively in livestock and poultry feces.  |  Wu, H., et al. 2017. J Chromatogr A. 1488: 10-16. PMID: 28159370
  9. Quantitative Prediction of Human Renal Clearance and Drug-Drug Interactions of Organic Anion Transporter Substrates Using In Vitro Transport Data: A Relative Activity Factor Approach.  |  Mathialagan, S., et al. 2017. Drug Metab Dispos. 45: 409-417. PMID: 28179375
  10. Implications of protein conformations to modifying novel inhibitor Oseltamivir for 2009 H1N1 influenza A virus by simulation and docking studies.  |  Singh, S., et al. 2018. Virusdisease. 29: 461-467. PMID: 30539048
  11. Chemical constituents from Artemisia rupestris and their neuraminidase inhibitory activity.  |  Cao, Y., et al. 2021. Nat Prod Res. 35: 1775-1782. PMID: 31303062
  12. Evaluation of potential herb-drug interactions between oseltamivir and commonly used anti-influenza Chinese medicinal herbs.  |  Zhang, Y., et al. 2019. J Ethnopharmacol. 243: 112097. PMID: 31325600
  13. Anti-Influenza Virus Activity of Adlay Tea Components.  |  Nagai, E., et al. 2019. Plant Foods Hum Nutr. 74: 538-543. PMID: 31728799
  14. Establishment of a rapid ELISPOT assay for influenza virus titration and neutralizing antibody detection.  |  Wang, G., et al. 2021. J Med Virol. 93: 3455-3464. PMID: 32621615
  15. Systematic Approach for Screening of Prodrugs: Evaluation Using Oseltamivir Analogues as Models.  |  Shimizu, M., et al. 2021. J Pharm Sci. 110: 925-934. PMID: 33065127

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Oseltamivir Acid, 2.5 mg

sc-212484
2.5 mg
$286.00

Oseltamivir Acid, 10 mg

sc-212484A
10 mg
$551.00

Oseltamivir Acid, 50 mg

sc-212484B
50 mg
$1102.00