Selank For Sale — Research Grade
PX1 Research supplies USA-synthesized, high-purity Selank (10mg) specifically validated for in vitro and laboratory research applications. Every lot undergoes rigorous HPLC and mass spectrometry analysis to guarantee chemical identity, exact sequence alignment, and exceptional purity standards for institutional researchers.
Quick answer
PX1 Research supplies USA-synthesized, high-purity Selank (10mg) specifically validated for in vitro and laboratory research applications. Every lot undergoes rigorous HPLC and mass spectrometry analysis to guarantee chemical identity, exact sequence alignment, and exceptional purity standards for institutional researchers.
Key takeaways
- [Selank](/research-peptides/selank) is a synthetic heptapeptide derived from the naturally occurring immunomodulatory peptide tuftsin (Thr-Lys-Pro-Arg).
- The primary sequence of [Selank](/research-peptides/selank) is Thr-Lys-Pro-Arg-Pro-Gly-Pro, giving it a molecular formula of C33H57N11O9 and a molecular weight of approximately 751.9 g/mol.
- In vitro and rodent assays demonstrate that [Selank](/research-peptides/selank) influences multiple neurochemical pathways.
- When designing neurobiological protocols, investigators frequently compare [Selank](/research-peptides/selank) against structural or functional counterparts within our [PX1 research peptide catalog](/research).
Introduction to Selank in Preclinical Research
Selank is a synthetic heptapeptide derived from the naturally occurring immunomodulatory peptide tuftsin (Thr-Lys-Pro-Arg). By extending the native tuftsin sequence with a Pro-Gly-Pro tripeptide motif at the C-terminus, structural biochemists generated a stabilized analogue displaying altered metabolic resistance and distinct neurochemical pathways in laboratory models.
When purchasing research-grade Selank 10mg vials, investigators access a compound widely cited in neuropharmacological and immunological literature. Preclinical studies indicate that Selank exhibits a dual mechanism of action, influencing both central neurotransmitter systems and peripheral immune signaling cascades without interacting directly with classical benzodiazepine binding sites.
As institutional interest in regulatory peptides expands, obtaining reliable, lot-certified compounds becomes critical. PX1 Research addresses this necessity by supplying fully verified reagents to academic, private, and government research facilities seeking stable peptide compounds for rigorous experimental protocols.
Chemical Structure and Molecular Stability
The primary sequence of Selank is Thr-Lys-Pro-Arg-Pro-Gly-Pro, giving it a molecular formula of C33H57N11O9 and a molecular weight of approximately 751.9 g/mol. The incorporation of the C-terminal Pro-Gly-Pro chain protects the peptide core against rapid enzymatic cleavage by carboxypeptidases and endopeptidases present in biological fluids during in vitro assays.
In cell culture and enzymatic degradation assays, this metabolic stabilization allows Selank to maintain structural integrity longer than native tuftsin. Researchers evaluating peptide kinetics in extracellular matrices frequently examine this extended half-life to quantify target engagement over prolonged experimental windows.
Maintaining chemical stability prior to hydration requires strict environmental controls. PX1 Research delivers lyophilized Selank sealed in sterile, vacuum-packed glass vials, preventing moisture absorption and oxidation during transit from our USA facilities.
Primary Research Findings and Proposed Mechanisms
In vitro and rodent assays demonstrate that Selank influences multiple neurochemical pathways. Preclinical evidence suggests that Selank modulates expression of brain-derived neurotrophic factor (BDNF) in hippocampal and cortical tissue preparations. Researchers observed upregulation of BDNF mRNA transcripts following exposure to the peptide, pointing to potential involvement in neuroplasticity models.
Additionally, rodent behavioral and neurochemical models show that Selank affects the metabolism of endogenous enkephalins. In vitro enzyme inhibition assays reveal that Selank suppresses specific enkephalin-degrading enzymes, such as neutral endopeptidase and aminopeptidase N, thereby altering local concentrations of naturally occurring opioid peptides in brain tissue homogenates.
Unlike classic psychotropic reference standards, preclinical trials show that Selank does not bind directly to GABA-A receptor sites. Instead, binding assays suggest allosteric modulation of GABAergic transmission, potentially influencing chloride channel conductance through indirect regulatory pathways without inducing receptor desensitization.
Comparative Analysis: Selank, Semax, and Tuftsin Analogues
When designing neurobiological protocols, investigators frequently compare Selank against structural or functional counterparts within our PX1 research peptide catalog. The most relevant comparative compounds include its parent molecule, tuftsin, as well as the ACTH(4-10) derivative Semax, and regulatory tissue peptides such as BPC-157.
While both Selank and Semax research peptides feature C-terminal Pro-Gly-Pro extensions designed to extend enzymatic half-life, their core sequences target distinct biochemical pathways. Semax originates from adrenocorticotropic hormone (ACTH) fragments and primarily influences melanocortin receptor interactions and neurotrophin expression. In contrast, Selank derives from tuftsin, retaining structural affinity for immunomodulatory pathways alongside its observed effects on monoaminergic and GABAergic systems.
Evaluating these compounds in parallel allows researchers to dissect distinct branches of the neuro-immune axis. Laboratories conducting broad screening assays often source multiple heptapeptides simultaneously to control for non-specific peptide backbone interactions across neuronal cell lines.
PX1 Quality Assurance: HPLC, MS, and Endotoxin Limits
When acquiring options for selank for sale online, institutional buyers must prioritize analytical transparency. PX1 Research implements a stringent quality assurance workflow executed through independent ISO 17025 accredited testing laboratories.
Every batch of Selank undergoes High-Performance Liquid Chromatography (HPLC) to confirm peptide purity levels consistently exceeding 98%. Mass Spectrometry (MS) analysis further confirms exact molecular mass and sequence fidelity, ensuring the absence of truncated sequences, deletion peptides, or residual coupling reagents.
Because biological assays—particularly cell culture and immunological studies—are highly sensitive to bacterial contaminants, PX1 Research subjects all finished lots to chromogenic LAL endotoxin testing. By enforcing strict endotoxin thresholds ( < 0.05 EU/mg), we protect your cell lines and organoid cultures from unwanted inflammatory responses or unconditioned baseline alterations.
Reconstitution, Handling, and Laboratory Storage Protocols
Lyophilized Selank should be stored at -20°C upon receipt to maintain long-term stability. For critical applications, storage at -80°C further minimizes degradation over multi-year periods. Reconstitution should be performed under a laminar flow hood using sterile, laboratory-grade solvents such as Bacteriostatic Water or Sterile Normal Saline (0.9% NaCl), depending on assay compatibility.
To reconstitute, allow the glass vial to equilibrate to room temperature before adding solvent. Gently swirl the fluid along the inner glass walls to facilitate complete dissolution; mechanical agitation or violent shaking must be avoided to prevent shearing of the peptide structure.
Once dissolved, aqueous peptide solutions are susceptible to hydrolysis and aggregation. Reconstituted aliquots should be used immediately or stored at 4°C for short-term assays (up to 7 days). For extended experimental series, freeze aliquots into single-use working volumes at -20°C to eliminate repeated freeze-thaw cycles.
Experimental Contexts: In Vitro and Animal Model Applications
In vitro investigations utilizing Selank frequently target gene expression profiling in primary neuronal cultures and astrocyte models. RNA sequencing studies demonstrate that exposure to Selank alters expression in over 60 genes associated with neurotransmission, ion channel regulation, and immune response pathways within 24 hours of administration.
In preclinical animal models, researchers utilize Selank to assess central nervous system dynamics during exposure to acute environmental stressors. Rodent behavior paradigms evaluate changes in locomotion, exploratory behavior, and spatial learning metrics following peptide administration.
Immunology laboratories also utilize Selank to study interleukin kinetics and cytokine expression patterns. In vitro spleen cell cultures exposed to Selank demonstrate modified synthesis rates of IL-6 and TNF-alpha, offering insights into regulatory cross-talk between the central nervous system and peripheral immune mechanisms.
Supply Chain Compliance and Procurement Standards
PX1 Research operates fully within domestic USA supply chains, maintaining synthesis and storage facilities in California and Arizona. This centralized footprint eliminates international customs delays, regulatory holds, and temperature exposure hazards associated with overseas transport.
Orders placed before 3:00 PM EST Monday through Friday ship same-day via expedited courier services. Every shipment is packaged in insulated, temperature-controlled containers to shield delicate lyophilized cakes from ambient thermal spikes during transit.
Institutional purchasing agents and laboratory managers seeking specialized fulfillment options, recurring bulk shipments, or formal quotations can access our dedicated PX1 wholesale portal to establish enterprise accounts with streamlined procurement terms.
Frequently Asked Questions
What is the certified purity level of PX1 Research Selank?
Every batch of Selank supplied by PX1 Research is verified by independent HPLC testing to meet or exceed 98% chemical purity. Certificates of Analysis (COAs) detailing specific lot purity and mass spectrometry results are accessible for every shipment.
How is Selank tested for endotoxins?
PX1 Research conducts kinetic chromogenic LAL assays on every peptide lot through an ISO 17025 accredited laboratory to verify that endotoxin levels remain strictly under 0.05 EU/mg, preventing interference in sensitive in vitro and cell culture models.
Is Selank supplied as a liquid or a powder?
Selank is supplied as a lyophilized (freeze-dried) powder sealed under vacuum in a sterile glass vial. This format ensures maximum long-term stability during shipping and storage prior to laboratory reconstitution.
What solvents are recommended for reconstituting Selank for in vitro use?
Common laboratory solvents include Sterile Bacteriostatic Water, Sterile Water for Injection, or Phosphate-Buffered Saline (PBS), depending on the requirements of your specific cell culture or enzymatic assay.
What is the recommended storage temperature for lyophilized Selank?
Upon arrival, unopened vials of lyophilized Selank should be stored at -20°C for standard research timelines or -80°C for long-term archiving. Avoid exposure to direct light and ambient humidity.
Where does PX1 Research ship Selank from?
All PX1 Research compounds are synthesized, packaged, and dispatched from our domestic fulfillment centers located in California and Arizona, offering same-day shipping on orders placed Monday through Friday.
Can Selank be used for human administration or clinical treatment?
No. Compounds supplied by PX1 Research are strictly intended for laboratory research use only by qualified investigators. They are not for human or veterinary use, consumption, injection, or clinical application.
How does Selank structurally differ from native Tuftsin?
Selank incorporates the native tuftsin sequence (Thr-Lys-Pro-Arg) connected to a C-terminal Pro-Gly-Pro tripeptide. This modification enhances resistance to metabolic enzymatic degradation while retaining receptor binding activity.
All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.