Thymulin 5mg — Vial Spec, Reconstitution Math & COA
A 5mg vial of Thymulin provides a high-purity, lyophilized thymic nonapeptide hormone designed specifically for standard in vitro and preclinical research applications. Research teams utilize this specific mass format to execute precisely measured cell culture assays, T-cell differentiation studies, and thymic signaling investigations requiring verified peptide purity.
Quick answer
A 5mg vial of Thymulin provides a high-purity, lyophilized thymic nonapeptide hormone designed specifically for standard in vitro and preclinical research applications. Research teams utilize this specific mass format to execute precisely measured cell culture assays, T-cell differentiation studies, and thymic signaling investigations requiring verified peptide purity.
Key takeaways
- A 5mg vial of Thymulin delivers 5,000 micrograms of pure lyophilized nonapeptide, formulated without extraneous bulk fillers to ensure consistent molar concentration across experimental replicates.
- Thymulin (formerly referred to as Facteur Thymique Sérique or FTS) is a naturally occurring thymic nonapeptide hormone composed of nine amino acid residues (Glu-Gln-Lys-Tyr-Ser-Gln-Gly-Gly-Asn).
- Accurate reconstitution math is critical for obtaining precise working stock concentrations from a 5mg (5,000 mcg) vial.
- Once reconstituted, peptide solutions are subject to enzymatic hydrolysis and physical degradation if exposed to repeated freeze-thaw cycles or elevated temperatures.
Overview of Thymulin 5mg Vial Specifications & Availability
A 5mg vial of Thymulin delivers 5,000 micrograms of pure lyophilized nonapeptide, formulated without extraneous bulk fillers to ensure consistent molar concentration across experimental replicates. In laboratory settings, this mass format is preferred by primary investigators conducting medium-scale cell culture runs, receptor binding assays, or short-term preclinical exposure models where precise dilution control is paramount.
To maintain optimal peptide stability, PX1 Research provides high-grade research-grade peptides manufactured within state-of-the-art USA facilities. While the 5mg format is widely used for standardized research workflows, laboratories requiring higher throughput or extended multi-plate experiments can explore our larger formats, such as the Thymulin 10mg vial. All available catalog items, including our full spectrum of immunological research tools, can be evaluated via our main all peptides directory.
Molecular Profile and Biological Role of Thymulin
Thymulin (formerly referred to as Facteur Thymique Sérique or FTS) is a naturally occurring thymic nonapeptide hormone composed of nine amino acid residues (Glu-Gln-Lys-Tyr-Ser-Gln-Gly-Gly-Asn). In preclinical models, its biological activity relies fundamentally on its equimolar coupling with zinc (Zn2+). This zinc-bound metallopeptide complex is responsible for inducing biological activity in target lymphoid cells.
In vitro data indicate that Thymulin plays a distinct regulatory role in the immune system, specifically driving T-cell differentiation, modulating surface marker expression (such as CD3, CD4, and CD8), and influencing cytokine production pathways. Because of its specific interaction with high-affinity cell-surface receptors on neuroendocrine and immune cells, Thymulin serves as a vital tool for studying thymic factor activity in cellular signaling pathways and neuroendocrine-immune network communication.
Laboratory Reconstitution Math for 5mg Lyophilized Mass
Accurate reconstitution math is critical for obtaining precise working stock concentrations from a 5mg (5,000 mcg) vial. Depending on the volume of sterile diluent introduced—such as Bacteriostatic Water, Sterile Water for Injection, or Phosphate-Buffered Saline (PBS)—the resulting concentration per milliliter (mL) or microliter (μL) varies proportionally.
When adding 1.0 mL of diluent to a 5mg vial, the resulting stock concentration is 5.0 mg/mL (or 5.0 mcg/μL). If 2.0 mL of diluent is introduced, the stock concentration becomes 2.5 mg/mL (2.5 mcg/μL). Adding 3.0 mL yields a stock concentration of approximately 1.67 mg/mL (1.67 mcg/μL). For laboratories requiring precise micro-molar calculations tailored to specific multi-well plate layouts, researchers should utilize our interactive reconstitution calculator to eliminate manual volumetric errors.
Aliquot Planning and Storage Protocols for Cell Culture Assays
Once reconstituted, peptide solutions are subject to enzymatic hydrolysis and physical degradation if exposed to repeated freeze-thaw cycles or elevated temperatures. To preserve structural integrity and prevent loss of biological activity, reconstituted Thymulin stock should be aliquoted immediately into single-use microcentrifuge tubes.
Lyophilized Thymulin vials should be stored at -20°C or -80°C upon receipt, protected from light and moisture. Following reconstitution with an appropriate sterile buffer or solvent, aliquots must be frozen at -80°C for long-term stability. Working aliquots stored at 2°C to 8°C should be utilized within 24 to 48 hours. When planning in vitro culture runs, researchers should account for dead volume in pipetting systems to ensure consistent dosing across all assay wells.
Quality Assurance: HPLC, MS, and Endotoxin Verification
Because cellular assays—particularly those involving sensitive primary T-cell cultures—are highly vulnerable to contamination, raw peptide purity and low endotoxin levels are non-negotiable requirements. Unquantified lipopolysaccharide (LPS) or organic impurities can induce non-specific inflammatory signaling, confounding research outcomes.
Every production batch at PX1 Research undergoes rigorous testing in ISO 17025 accredited analytical laboratories. High-Performance Liquid Chromatography (HPLC) verifies chemical purity (>98%), while Mass Spectrometry (MS) confirms exact molecular weight and identity. Furthermore, routine chromogenic LAL assays ensure strict endotoxin limits (<0.01 EU/mg). Researchers can review lot-specific analytical documentation at any time by visiting our dedicated COA search page.
Comparative Analysis: Thymulin vs. Related Immune & Thymic Peptides
In immunological research, Thymulin is frequently evaluated alongside other thymic and signaling compounds to map distinct signaling pathways. While Thymulin functions specifically as a zinc-dependent nonapeptide involved in early and intermediate T-cell maturation, related compounds exhibit alternative mechanisms of action and structural characteristics.
For instance, Thymosin Alpha-1 is a 28-amino-acid peptide primarily investigated for its role in adaptive immune enhancement and Toll-like receptor signaling, whereas Thymosin Beta-4 is an actin-sequestering peptide extensively studied for cell migration and tissue remodeling mechanisms. Additionally, researchers comparing synthetic defense peptides often evaluate LL-37 for its direct antimicrobial membrane interaction pathways. Selecting the appropriate compound depends entirely on whether the investigator is targeting thymic hormone receptor signaling, cell motility, or host defense mechanisms.
Selection Guide: Evaluating 5mg vs. 10mg Vial Formats
Choosing between a 5mg and a 10mg vial depends on the scope, scale, and duration of the planned laboratory protocol. The 5mg format offers ideal flexibility for pilot studies, exploratory dosage-response curves, and small-batch cell culture assays where keeping working stocks fresh is prioritized over sheer bulk volume.
Conversely, laboratories conducting extensive high-throughput screening, multi-plate assays, or continuous preclinical animal model studies often benefit from larger single-lot quantities. Utilizing a 10mg vial reduces inter-vial reconstitution variability across large experimental sets. Researchers requiring assistance with experiment sizing or high-volume orders can consult our wholesale inquiry hub for specialized institutional support.
Preclinical Applications in Cellular Signaling and T-Cell Differentiation
Preclinical studies suggest that Thymulin's capacity to modulate immune signaling depends heavily on the presence of functional zinc ions within the cellular microenvironment. In vitro assays demonstrate that zinc-deficient Thymulin (inactive form) fails to bind to target receptors, whereas the zinc-coupled metallopeptide restores signal transduction.
In cellular models, Thymulin exposure has been shown to modulate intracellular cyclic AMP (cAMP) levels, upregulate interleukin-2 (IL-2) expression, and promote the maturation of immature thymocytes into functional T-lymphocyte lineages. These pathways make Thymulin an important reference standard in neuroendocrine-immunology research, where researchers investigate the bidirectional communication between thymic hormones and the central nervous system.
Institutional Procurement and Quality Standards at PX1 Research
PX1 Research is dedicated to supplying verified, highly stable research compounds to academic, clinical, and corporate research laboratories. All products are manufactured in GMP-compliant facilities within the USA and maintained under strict climate-controlled conditions prior to fulfillment.
We offer rapid same-day dispatch (Monday through Friday) from our centralized distribution centers in California and Arizona to prevent thermal degradation during transit. Laboratory managers seeking to expand their library of investigative compounds can access detailed technical documentation, scientific literature references, and full catalog specifications across our comprehensive research portal.
Frequently Asked Questions
What is the exact mass contained in a Thymulin 5mg vial?
A 5mg vial contains precisely 5.0 milligrams (5,000 micrograms) of purified, lyophilized Thymulin peptide powder, verified by mass spectrometry and analytical HPLC.
How much diluent should be used to reconstitute a 5mg Thymulin vial?
Reconstitution volume depends on the desired stock concentration. Adding 1.0 mL of sterile diluent yields a 5.0 mg/mL concentration, 2.0 mL yields 2.5 mg/mL, and 3.0 mL yields approximately 1.67 mg/mL.
Does Thymulin require zinc for biological activity in cell culture assays?
Yes. Preclinical and in vitro studies confirm that Thymulin requires equimolar coupling with zinc (Zn2+) to achieve its active metallopeptide conformation and bind effectively to target cell surface receptors.
How should reconstituted Thymulin stock be stored?
Reconstituted stock solutions should be aliquoted into single-use microcentrifuge tubes and stored at -80°C to prevent degradation from freeze-thaw cycles. Short-term storage at 2°C to 8°C should not exceed 24–48 hours.
Where can I obtain the lot-matched Certificate of Analysis (COA) for my vial?
Lot-specific COAs detailing HPLC purity, mass spectrometry mass verification, and endotoxin assay results can be downloaded directly from our COA search portal using the lot number printed on the vial.
Is Thymulin suitable for human therapeutic or diagnostic use?
No. Thymulin provided by PX1 Research is strictly designated for laboratory in vitro and preclinical research use only. It is not for human or veterinary use, therapy, or clinical diagnosis.
What are the endotoxin specifications for PX1 Research peptides?
All research peptides manufactured for PX1 Research undergo LAL chromogenic endotoxin testing, ensuring levels remain strictly below <0.01 EU/mg to prevent interference in primary cell culture assays.
What is the difference between a 5mg vial and a 10mg vial of Thymulin?
The difference is purely the physical mass of lyophilized peptide. The 5mg vial is suited for small-batch or pilot studies, while the 10mg vial provides higher yield for high-throughput screening and continuous experimental runs.
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