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Thymosin Alpha-1
Peptide appearance Lyophilized form

Thymosin peptide

Thymosin Alpha-1

In stock

Thymosin Alpha-1 is a synthetic thymosin peptide made of 28 amino acids. Published studies look at immune-cell signals, cytokines, nerve-cell models, microbial tests, and peptide synthesis.

Available strengths
65,30 
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Thymosin Alpha-1

Price range: 39,30 € through 65,30 €

Thymosin alpha peptide for immune-signalling and cytokine pathway studies.

Research overview

Thymosin Alpha-1

Thymosin Alpha-1, also called thymalfasin, has a defined thymosin-family sequence. It is different from other thymosin peptides and fragments.

Studies cover immune markers, cytokines, nerve cells, viral and microbial tests, cancer-cell models, and synthesis methods. These are experimental settings, not a promised result.

Immune-cell and cytokine research

Studies measure lymphocytes, dendritic cells, macrophages, and cytokines in controlled systems. These endpoints help researchers compare immune-signalling models.

Other work looks at pattern recognition and antigen presentation. The cell source and assay design matter in these studies.

Cellular and synthesis studies

Published work also uses nerve-cell, microbial, viral, and cancer-cell models and examines peptide-synthesis methods. Each study type should be read with its own methods and controls.

Compound information

Specifications

Molecular profile

Sequence
Ac-Ser-Asp-Ala-Ala-Val-Asp-Thr-Ser-Ser-Glu-Ile-Thr-Thr-Lys-Asp-Leu-Lys-Glu-Lys-Lys-Glu-Val-Val-Glu-Glu-Ala-Glu-Asn-OH
Molecular mass
3108.3 g/mol
CAS number
62304-98-7
Molecular formula
C129H215N33O55

Material record

Physical appearance
White to off-white lyophilized powder
Solubility
Soluble in bacteriostatic water and suitable aqueous laboratory solvents.
Product note
Synthetic 28-amino-acid thymosin alpha peptide fragment; studied for immune-signalling and cytokine pathway controlled research; supplied strictly for research use only.

Laboratory care

Handling

Peptides in transport

Peptides in lyophilized form are supplied in glass vials by standard shipping methods and do not require refrigeration. Short-term temperature fluctuations during transport will not reduce their quality and efficacy. Even at high summer temperatures, the peptides in lyophilized form are stable for several weeks.

Storage of lyophilized peptides

Lyophilized peptides should be stored in a dry place, protected from light and moisture. The following storage conditions are generally recommended:

  • Room temperature (15–25 °C): Up to 3 months
  • Refrigerated (2–8 °C): Up to 6 months
  • Frozen (-20 °C or below): 3–5 years (recommended for long-term storage)

Allow the vial to reach room temperature after taking it out of the refrigerator or freezer.

Storage of reconstituted peptides

Once reconstituted, peptide solutions are generally less stable than their lyophilized form and should be stored under refrigerated conditions whenever possible.

The following storage conditions are generally recommended:

  • Room temperature (15–25 °C): Avoid prolonged storage
  • Refrigerated (2–8 °C): Typically 4–8 weeks
  • Frozen (-20 °C or below): Up to 3–4 months

To preserve peptide integrity, avoid repeated freeze–thaw cycles, as these may accelerate peptide degradation.

Important: Most manufacturers recommend discarding reconstituted peptides within 4 weeks when stored at 2–8 °C. This recommendation is intentionally conservative and may not reflect the actual chemical stability of every peptide. In our own stability studies, many peptides reconstituted in bacteriostatic water showed no detectable degradation after 12 weeks of refrigerated storage. As peptide stability is highly sequence- and formulation-dependent, this result should not be extrapolated to all peptides without supporting stability data.

Analytical documentation

Tests

Latest published result

Liquilabs s.r.o.Signed Certificate of Analysis · 10mg

Certificate preview for 10mg

99.7%Purity by HPLC

Batch number
8730516
Tested
2026-09-08

Recorded QC panel

AssayPeptide Screening 0.1% TFA
10.30 mg (± 0.05 mg)
PurityPeptide Screening 0.1% TFA
99.7%
Identity (spectrum)Peptide Screening 0.1% TFA
964 (± 5)
Identity (RT)Retention time
0.998 (± 0.005)
Bacterial endotoxinUSP 85 / Eur. Ph. 2.6.14
0.010 EU/mg

These are the latest published results for this strength. The batch number is printed on each vial. Your supplied batch is confirmed against the matching published record when your order is allocated.

See all test results

Signed certificate

Source record

References

National Center for Biotechnology Information

PubChem Compound Summary: Thymalfasin

Authoritative identity record for Thymosin Alpha-1.

PubChem · View source ↗

Nevo N, et al. · 2022

Thymosin alpha 1 as an adjuvant to hyperthermic intraperitoneal chemotherapy in an experimental model of peritoneal metastases from colonic carcinoma

Primary experimental report involving thymosin alpha-1.

International Immunopharmacology · 10.1016/j.intimp.2022.109166 View source ↗

Wei YT, Wang XR, Yan C, et al. · 2022

Thymosin alpha-1 Reverses M2 Polarization of Tumor-Associated Macrophages during Efferocytosis

Primary cell-signalling study involving thymosin alpha-1.

Cancer Research · 10.1158/0008-5472.can-21-4260 View source ↗

National Center for Biotechnology Information

PubChem compound record

PubChem · View source ↗

Dominari A, Hathaway Iii D, Pandav K, Matos W, Biswas S, Reddy G, Thevuthasan S, Khan MA, Mathew A, Makkar SS, Zaidi M, Fahem MMM, Beas R, Castaneda V, Paul T, Halpern J, Baralt D · 2020

Thymosin alpha 1: A comprehensive review of the literature

World journal of virology · View source ↗

Chien RN, Liaw YF, Chen TC, Yeh CT, Sheen IS · 1998

Efficacy of thymosin alpha1 in patients with chronic hepatitis B: a randomized, controlled trial

Hepatology (Baltimore, Md.) · View source ↗

King R, Tuthill C · 2016

Immune Modulation with Thymosin Alpha 1 Treatment

Vitamins and hormones · View source ↗

Rost KL, Wierich W, Masayuki F, Tuthill CW, Horwitz DL, Herrmann WM · 1999

Pharmacokinetics of thymosin alpha1 after subcutaneous injection of three different formulations in healthy volunteers

International journal of clinical pharmacology and therapeutics · View source ↗

C. Zhang, J. Zhou, K. Cai, W. Zhang, C. Liao, and C. Wang · 2018

Gene cloning, expression and immune adjuvant properties of the recombinant fusion peptide Tα1-BLP on avian influenza inactivate virus vaccine

Microb. Pathog ·

F. Pei, X. Guan, and J. Wu · 2018

Thymosin alpha 1 treatment for patients with sepsis

Expert Opin. Biol. Ther ·

G. Wang et al. · 2017

Immunopotentiator Thymosin Alpha-1 Promotes Neurogenesis and Cognition in the Developing Mouse via a Systemic Th1 Bias

Neurosci. Bull ·

L. Romani et al. · 2004

Thymosin α 1 activates dendritic cells for antifungal Th1 resistance through Toll-like receptor signaling

Blood ·

L. Romani et al. · 2007

Thymosin alpha1: an endogenous regulator of inflammation, immunity, and tolerance

Ann. N. Y. Acad. Sci ·

A. L. Goldstein and A. L. Goldstein · 2009

From lab to bedside: emerging clinical applications of thymosin alpha 1

Expert Opin. Biol. Ther ·

C. Matteucci et al. · 2017

Thymosin alpha 1 and HIV-1: recent advances and future perspectives

Future Microbiol ·

C. Matteucci et al. · 2015

Thymosin α 1 potentiates the release by CD8(+) cells of soluble factors able to inhibit HIV-1 and human T lymphotropic virus 1 infection in vitro

Expert Opin. Biol. Ther ·

J. Kharazmi-Khorassani, A. Asoodeh, and H. Tanzadehpanah · 2019

Antioxidant and angiotensin-converting enzyme (ACE) inhibitory activity of thymosin alpha-1 (Thα1) peptide

Bioorganic Chem ·

J. Kharazmi-Khorassani and A. Asoodeh · 2019

Thymosin alpha-1; a natural peptide inhibits cellular proliferation, cell migration, the level of reactive oxygen species and promotes the activity of antioxidant enzymes in human lung epithelial adenocarcinoma cell line (A549)

Environ. Toxicol., May 2019 ·

M. Maio et al. · 2010

Large randomized study of thymosin alpha 1, interferon alfa, or both in combination with dacarbazine in patients with metastatic melanoma

J. Clin. Oncol. Off. J. Am. Soc. Clin. Oncol ·

R. Danielli, E. Fonsatti, L. Calabrò, A. M. Di Giacomo, and M. Maio · 2012

Thymosin α1 in melanoma: from the clinical trial setting to the daily practice and beyond

Ann. N. Y. Acad. Sci ·

X. Shen et al. · 2018

Generation of a novel long-acting thymosin alpha1-Fc fusion protein and its efficacy for the inhibition of breast cancer in vivo

Biomed. Pharmacother. Biomedecine Pharmacother ·

F. Wang, T. Yu, H. Zheng, and X. Lao · 2018

Thymosin Alpha1-Fc Modulates the Immune System and Down-regulates the Progression of Melanoma and Breast Cancer with a Prolonged Half-life

Sci. Rep ·

Y. Xu et al. · 2019

Thymosin Alpha-1 Inhibits Complete Freund's Adjuvant-Induced Pain and Production of Microglia-Mediated Pro-inflammatory Cytokines in Spinal Cord

Neurosci. Bull., Feb. 2019 ·

L. Romani et al. · 2017

Thymosin α1 represents a potential potent single-molecule-based therapy for cystic fibrosis

Nat. Med ·

P. F. Day, M. Duggal, and H. Nazzal · 2019

Interventions for treating traumatised permanent front teeth: avulsed (knocked out) and replanted

Cochrane Database Syst. Rev ·

M. Schmidt et al. · 2018

Design of a substrate-tailored peptiligase variant for the efficient synthesis of thymosin-α1

Org. Biomol. Chem ·

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