Thymalin is a bioregulators research compound currently in stock directly from a verified Chinese manufacturer. Every batch is tested by the manufacturer for purity and concentration as part of routine quality control. Sourcing is direct — no intermediaries. Minimum order value is $600 USD. International shipping available.
Thymalin is a polypeptide bioregulator derived from the thymus gland, representing a thymus extract standardized for its immunomodulatory peptide content. As part of the peptide bioregulator research program developed in Russian immunogerontology, thymalin is positioned as a thymus-derived preparation that exerts trophic and regulatory effects on thymic function and T lymphocyte differentiation — processes that decline significantly with age-related thymic involution. The active components include short peptides in the range of 1-6 kDa that have been studied for interactions with T lymphocyte precursors and thymic epithelial cells.
Research in aged animal models has examined thymalin's effects on thymus morphology, T lymphocyte subset composition (CD4⁺/CD8⁺ ratio), NK cell activity, and cytokine production profiles. Studies have assessed whether thymalin administration in aged rodents can partially restore thymic structure, increase circulating naive T cell populations, and improve immune response to antigenic challenge — functional endpoints consistent with thymic rejuvenation research. Mechanistically, the bioregulator approach proposes that short thymic peptides restore gene expression patterns in thymic stromal and precursor cells that decline with age-related epigenetic changes.
PeptidesFromChina.co supplies Thymalin as a lyophilized powder at 99%+ purity specifications for its peptide fraction content, verified by HPLC. Every batch is tested by the manufacturer for purity and concentration as part of routine quality control. All products are for laboratory research use only and are not for human consumption.
| Chemical Class | Polypeptide bioregulator (thymus-derived peptide fraction) |
|---|---|
| Synonyms | Thymus polypeptide bioregulator, thymus extract peptide fraction |
| Active Components | Short thymic peptides 1-6 kDa including thymopentin-related sequences |
| Research Areas | Immunosenescence, thymic involution, T lymphocyte biology, NK cell function, aging immunology |
| Form | Lyophilized powder |
| Storage | −20°C long-term; 2-8°C aqueous (use within 24 hours after reconstitution) |
| CAS Number | N/A — complex mixture |
| Molecular Weight | N/A — complex mixture |
| Molecular Formula | N/A — complex mixture |
| Sequence | N/A — complex mixture |
| Name | Strength | Pack Size | Purity | Availability | Price (USD) |
|---|---|---|---|---|---|
| Thymalin | 10 mg | 10 vials | ≥98% | In Stock | $79.00 |
Testing method: HPLC / LC-MS. Every batch is tested before shipment. Purity ≥99% confirmed per batch.
Every batch is tested by the manufacturer for purity and concentration as part of routine quality control, using methods such as HPLC and LC-MS. These results are kept in the manufacturer's internal quality-control records and are not issued as a separate certificate or document.
Thymic involution — the age-related replacement of thymic cortex with adipose tissue — is a primary driver of immunosenescence (age-related immune decline). Research has used thymalin to examine whether thymic peptide supplementation can partially reverse morphological changes in aged thymus, quantified by histological assessment of cortex/medulla ratios, thymic epithelial cell density, and Hassall's corpuscle distribution.
Studies in aged rodents have assessed thymalin's effects on peripheral T lymphocyte populations — specifically the ratio of naive (CD44lo CD62Lhi) to memory (CD44hi) T cells, which shifts with aging as thymic output declines. Research has measured whether thymalin increases peripheral naive T cell frequency, improves CD4⁺/CD8⁺ ratios, and enhances T cell proliferative responses to mitogenic or antigenic stimulation.
Beyond T lymphocytes, thymalin has been studied for effects on NK (natural killer) cell cytotoxic activity and macrophage functional capacity in aged animal models. These innate immune endpoints complement adaptive immunity assessments, providing a broader picture of whether thymus-derived peptide supplementation affects both thymic-dependent and thymic-independent immune compartments in aging research.
Thymosin alpha-1 is a single, well-defined 28-amino acid peptide derived from prothymosin alpha, with a characterized sequence and receptor interactions. Thymalin is a polypeptide fraction from thymus extract containing multiple short peptide components without a single defined sequence. Thymosin alpha-1 is more suitable for receptor-specific mechanistic research; thymalin is used in broader bioregulator and immunosenescence research contexts.
Thymic rejuvenation is an active field examining whether pharmacological intervention can restore age-related thymic involution and improve adaptive immune function. Thymalin provides a historical reference compound from the peptide bioregulator tradition, allowing comparison with newer thymic rejuvenation strategies (IL-7, GH, FOXN1 upregulation, ketosis-mediated thymic restoration) in aged animal models.
Thymalin is supplied to 99%+ purity specifications for its active peptide fraction content, verified by HPLC. Every batch is tested by the manufacturer for purity and concentration as part of routine quality control.
Lyophilized thymalin should be stored at −20°C. Reconstituted solutions should be kept at 2-8°C and used within 24 hours. The polypeptide mixture is more susceptible to degradation than single-sequence peptides.
For laboratory research use only. Not for human or veterinary use. PeptidesFromChina.co is a B2B wholesale supplier operating under strict research-use-only terms. All products are sold exclusively for in vitro and preclinical research purposes.