- HPLC purity ≥99%, with a COA for each lot on request
- Certificate of analysis tied to your lot number
- Tracked EU delivery, dispatched the next working day
Thymulin (FTS)
Thymulin (FTS) — nine-residue thymic peptide whose activity requires zinc
In stock2 formats availableCAS 63958-90-7
€76Range €76 – €131
This listing is currently unavailable. Contact us and we will tell you when it is back or suggest an equivalent.
Ask about this listing or request its COA- FormLyophilized powder, sealed glass vial with crimped stopper
- Mol. weight858.83 g/mol
- Research areasZinc status and immunity, thymic involution, neuroendocrine-immune interaction
For laboratory research use only. Sold exclusively for in-vitro laboratory research by qualified professionals. Not for human or veterinary use, and not a medicine, food, cosmetic or dietary supplement. Terms and Conditions
Overview
Key facts
Thymulin — known in older papers as facteur thymique sérique, or FTS — is a nonapeptide secreted by the epithelial cells of the thymus.
- CAS number
- 63958-90-7
- Molecular formula
- C33H54N12O15
- Molecular weight
- 858.83 g/mol
- Amino acid sequence
- Pyr-Ala-Lys-Ser-Gln-Gly-Gly-Ser-Asn
- Purity
- ≥99% by HPLC; lot-matched COA available
- Form
- Lyophilized powder, sealed glass vial with crimped stopper
- Storage
- −20 °C, sealed and protected from light and moisture
- Available sizes
- 5 mg · 10 mg
For research use only. Not for human consumption.
Thymulin — known in older papers as facteur thymique sérique, or FTS — is a nonapeptide secreted by the epithelial cells of the thymus. What defines it is an absolute need for metal: without a bound zinc ion the peptide does nothing, and only the zinc complex is active. This property, set out in the foundational work of the 1970s and 1980s, is why the zinc-bound form sometimes appears as a separate entity.
Because circulating thymulin activity mirrors zinc status, the peptide has kept a lasting place in immunology. Research on zinc deficiency, on the thymus shrinking with age and on hormonal influences on thymic function all rely on thymulin activity as a readout — making it a reagent with a defined analytical job, not merely an object of study.
We make it by solid-phase synthesis, purify it to ≥99% by reversed-phase HPLC and supply it as lyophilised powder in sealed 5 mg and 10 mg vials, each lot with its certificate of analysis. Bear in mind that the vial contains the peptide alone; whether zinc is present in your experiment depends on your buffer and design. For laboratory research only.
Specifications
Identity
- CAS number
- 63958-90-7
- Molecular formula
- C33H54N12O15
- Molecular weight
- 858.83 g/mol
- Amino acid sequence
- Pyr-Ala-Lys-Ser-Gln-Gly-Gly-Ser-Asn
- Chain length
- 9 amino acids, N-terminal pyroglutamate
Supply & purity
- Form
- Lyophilized powder, sealed glass vial with crimped stopper
- Purity
- ≥99% by HPLC; lot-matched COA available
- Available sizes
- 5 mg, 10 mg
Handling & storage
- Storage (lyophilized)
- −20 °C, sealed and protected from light and moisture
Additional detail
- Other names
- FTS, facteur thymique sérique, serum thymic factor
- Metal dependence
- Activity reported only in the zinc-bound form
- Source
- Produced natively by thymic epithelial cells
- Research areas
- Zinc status and immunity, thymic involution, neuroendocrine-immune interaction
Questions about Thymulin (FTS)
What is Thymulin?
A nonapeptide made by thymic epithelial cells, historically named facteur thymique sérique (FTS). We supply it as a lyophilised research powder for studies of zinc status, thymic involution and neuroendocrine–immune interactions.
Why does zinc matter so much?
According to published research, the peptide is inactive by itself and becomes active only after forming a 1:1 complex with a zinc ion. This dependence is why nutritional immunologists have used thymulin activity as a functional gauge of how much zinc is available.
Is zinc included in the vial?
No — you receive the peptide only. Whether the active zinc complex forms in your experiment depends on trace metals in your buffer and any chelators you use, so it becomes a matter of study design, not of product specification.
How is Thymulin different from Thymalin?
Thymulin is one defined nonapeptide whose sequence, formula and mass can all be checked analytically. Thymalin is a complex of numerous thymic polypeptides with no single structure. They come from the same tissue but cannot be swapped for each other in research.
What purity do you guarantee, and is there a COA?
Every lot is purified and analysed by reversed-phase HPLC to ≥99%, with its mass checked against the expected 858.83 g/mol. The certificate carrying the lot number on your vial can be requested before or after you order.
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