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Immune
TA-1
Thymosin Alpha-1
TA-1 (Thymosin Alpha-1) is a 28-amino-acid, N-terminally acetylated peptide originally isolated from thymic tissue and known in research as thymalfasin. It is the reference thymic immunomodulatory peptide, studied as the active compound behind the branded product Zadaxin.
In vitro and preclinical work focuses on T-cell maturation and differentiation, dendritic-cell activation, Toll-like receptor signaling, and broader immune-response modulation. Its full-length thymic-peptide structure distinguishes it from the shorter immune bioregulators such as Thymogen and Vilon, which are examined for related but distinct signaling. Supplied as a lyophilized 10-vial 10mg kit for in vitro research use only.
$435
1
$435
per 10-vial kit
$4.35 / mg
Research Library
TA-1 Research Review →
Mechanism, evidence level & in vitro context
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Available upon request. Custom and large batch orders include a batch-specific COA.
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⚠ For in vitro research use only.
Not for human or animal consumption. Not evaluated by the FDA.
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Common Questions
TA-1 FAQ
What is TA-1?+
TA-1 is a Thymosin Alpha-1 supplied for laboratory research. Thymic peptide studied in vitro for T-cell maturation pathway modeling, dendritic cell activation signaling analysis, and immune-response mechanism research.
Is TA-1 the same as Thymalfasin or Zadaxin?+
Yes. TA-1 is Thymosin Alpha-1, also known as thymalfasin and studied as the active compound in the branded product Zadaxin. It is researched for T-cell maturation and immune-response signaling.
What is lyophilized TA-1, and how is it reconstituted?+
TA-1 is supplied as a lyophilized (freeze-dried) powder, a dehydrated form that keeps the peptide stable during shipping and storage. In the laboratory it is reconstituted (returned to liquid form) using a solvent such as bacteriostatic water, added slowly against the side of the vial, which is then swirled gently, never shaken, until the powder fully dissolves. All handling is for in vitro research use only.
How should TA-1 be stored?+
Store the lyophilized TA-1 powder at -20°C, protected from light and moisture, where it remains stable long-term. Once reconstituted, keep it refrigerated (2-8°C) and use it within the timeframe appropriate for your research protocol.
What is the purity of TA-1, and how is it tested?+
Every batch of TA-1 is produced to a purity of 99% or higher. Purity and molecular identity are verified using standard analytical methods: high-performance liquid chromatography (HPLC) to measure purity, and mass spectrometry (MS) to confirm the peptide's molecular weight.