High-purity Selank peptide is available for qualified laboratory researchers seeking validated, highly characterized synthetic heptapeptides for in vitro and preclinical investigation. PX1 Research provides batch-verified Selank with comprehensive documentation, including lot-specific RP-HPLC and ESI-MS certificates of analysis.
High-purity Selank peptide is available for qualified laboratory researchers seeking validated, highly characterized synthetic heptapeptides for in vitro and preclinical investigation. PX1 Research provides batch-verified Selank with comprehensive documentation, including lot-specific RP-HPLC and ESI-MS certificates of analysis.
Investigators looking to buy Selank peptide online require validated analytical testing, lot-specific traceability, and documented chemical purity. Selank (Thr-Lys-Pro-Arg-Pro-Gly-Pro) is a synthetic heptapeptide derived from the endogenous immunomodulatory peptide tuftsin, manufactured strictly for in vitro assays, cellular receptor binding studies, and preclinical rodent models.
When procuring synthetic peptides for quantitative scientific research, simple purity claims are insufficient. Laboratory workflows require verifiable analytical data confirming target sequence identity, freedom from truncated peptide counter-ions, and minimal residual endotoxin levels. PX1 Research supplies research-grade Selank synthesized in GMP-compliant facilities and tested through independent ISO 17025 accredited laboratories to ensure reproducible experimental outcomes.
Selank is a modified analog of the naturally occurring tetrapeptide tuftsin (Thr-Lys-Pro-Arg). By extending the C-terminus with a Pro-Gly-Pro tripeptide sequence, original biochemical designers synthesized a heptapeptide with significantly enhanced metabolic stability against circulating peptidases. The addition of C-terminal proline residues creates steric hindrance that reduces enzymatic degradation in plasma and brain tissue homogenates.
The molecular formula of Selank is C33H57N11O9, with a monoisotopic molecular weight of approximately 751.9 g/mol. In solid-state form, the compound is supplied as a lyophilized trifluoroacetate (TFA) or acetate salt. Understanding the precise molecular weight and salt adduct profile is critical for laboratory researchers calculating exact molar concentrations for buffer solutions or receptor affinity assays detailed in our research peptide library.
Preclinical literature demonstrates that Selank exerts complex neurochemical effects in rodent models. A primary focus of laboratory investigation involves its ability to alter gene expression patterns within the hippocampus and frontal cortex. In vitro assays and animal tissue analyses indicate that Selank exposure leads to rapid upregulation of brain-derived neurotrophic factor (BDNF) mRNA transcription and subsequent BDNF protein synthesis.
Furthermore, preclinical experiments reveal that Selank modulates monoaminergic neurotransmitter systems. Quantitative tissue homogenate chromatography shows altered turnover rates of serotonin (5-HT) and dopamine in specific brain structures following administration in rodent trial cohorts. Researchers investigating neuroplasticity, cellular signaling cascades, and trophic factor regulation utilize high-purity Selank to map these distinct metabolic pathways.
Beyond BDNF regulation, in vitro biochemical assays indicate that Selank inhibits endogenous peptidases responsible for degradation of enkephalins. Specifically, the peptide demonstrates competitive inhibitory kinetics against carboxypeptidase H and leu-enkephalin-degrading enzymes, effectively prolonging the half-life of natural opioid peptides in neuronal tissue preparations.
Additionally, electrophysiological research on isolated neuronal membranes suggests that Selank interacts indirectly with the GABAergic signaling complex. While Selank does not bind directly to the primary GABA recognition site on the GABA-A receptor, binding radio-ligand assays demonstrate that it modulates benzodiazepine binding site affinity in the presence of low GABA concentrations. This subtle allosteric modulation makes the compound a valuable tool for neuropharmacology laboratories exploring non-sedating GABAergic modulation.
When designing neurochemical protocols, researchers often evaluate Selank alongside other synthetic regulatory peptides to establish comparative mechanisms. For example, Semax shares a melanocortin-derived heritage and is frequently studied for ACTH-like signaling and neuroprotective mRNA expression, whereas compounds such as BPC-157 and PE-22-28 represent distinct structural classes targeting systemic tissue repair pathways and TREK-1 potassium channel modulation, respectively.
Navigating our complete catalog of research peptides allows principal investigators to compare molecular weights, target affinities, and purity profiles across experimental series. Choosing between these molecules depends heavily on whether the protocol targets neurotrophin upregulation, peptidase inhibition, or peripheral vascular signaling in cellular models.
Assuring chemical integrity is paramount when researchers buy Selank peptide online for sensitive biochemical experiments. At PX1 Research, every batch of Selank undergoes rigorous analytical evaluation prior to distribution. Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) is utilized to verify chromatographic purity, ensuring that target peptide peak integration exceeds 98.0%, with minor synthesis deletion sequences fully quantified.
Electrospray Ionization Mass Spectrometry (ESI-MS) confirms the exact molecular mass matching theoretical sequence predictions. Crucially for cell culture and in vivo animal models, lot-specific Chromogenic Limulus Amebocyte Lysate (LAL) assays verify that endotoxin levels remain below strictly defined limits (<0.01 EU/mg). Every shipment includes access to a lot-traceable Certificate of Analysis (COA) directly linked to the physical vial received.
Lyophilized Selank must be reconstituted under aseptic laboratory conditions prior to experimental application. Researchers standardly utilize sterile Bacteriostatic Water (0.9% benzyl alcohol) or non-pyrogenic Phosphate-Buffered Saline (PBS, pH 7.4) depending on the sensitivity of downstream cellular or enzymatic assays. Standard laboratory practice dictates allowing the vial and diluent to equilibrate to room temperature before introducing solvent.
To perform reconstitution, direct the diluent down the inner glass wall of the vial rather than plunging liquid directly onto the lyophilized cake. Gently swirl the container until complete dissolution is achieved; aggressive vortexing or mechanical shaking must be avoided to prevent shear-induced peptide aggregation. Laboratories procuring reagents in bulk or establishing dedicated supply arrangements can consult our wholesale lab portal for volume pricing and technical specifications.
Lyophilized Selank demonstrates high chemical stability when stored under controlled environmental conditions. Unreconstituted vials should be kept in a desiccated freezer at -20°C for short-to-medium duration research, or at -80°C for long-term storage exceeding twelve months. Protecting the dry peptide from moisture, direct light, and ambient thermal fluctuations prevents hydrolytic cleavage.
Once reconstituted into aqueous solution, the peptide's shelf life decreases significantly due to potential peptide bond hydrolysis. Reconstituted solutions should be aliquoted into single-use polypropylene microtubes to eliminate repeated freeze-thaw cycles and stored at -20°C or below. Liquid aliquots maintained at 2°C to 8°C should generally be consumed within 7 to 14 days to preserve structural fidelity during qualitative research assays. For further detail on molecular handling, review our detailed guide on Selank research mechanisms.
Selecting a reliable USA vendor when buying Selank online ensures seamless supply chain security and strict adherence to technical standards. PX1 Research manufactures and packages peptides in US-based, GMP-compliant facilities under rigid quality management protocols. Every lot is independently verified by accredited third-party testing facilities, eliminating conflicts of interest and ensuring objective purity verification.
Orders placed before daily cutoff times ship same-day from our fulfillment facilities located in California and Arizona. With transparent documentation, robust cold-chain compliant packaging options, and full lot traceability, PX1 Research stands as the premier partner for academic institutions, biotechnology enterprises, and clinical research organizations worldwide.
What purity standard is guaranteed when I buy Selank peptide online from PX1 Research?
PX1 Research guarantees a minimum of 98.0% chemical purity for Selank, verified via lot-specific RP-HPLC peak area integration and confirmed by ESI-MS mass spectrometry.
How is Selank tested for endotoxins prior to shipment?
Every batch undergoes LAL chromogenic endotoxin testing at an independent ISO 17025 accredited laboratory to ensure levels remain under strict laboratory threshold standards (<0.01 EU/mg).
Is Selank supplied in liquid or lyophilized powder format?
Selank is supplied exclusively as a freeze-dried (lyophilized) sterile powder to ensure maximum structural stability during transit and storage.
What solvent is recommended for reconstituting Selank in a laboratory?
Depending on assay requirements, researchers commonly reconstitute Selank using sterile Bacteriostatic Water or sterile 0.9% Sodium Chloride / PBS (pH 7.4).
Where does PX1 Research ship Selank orders from?
All orders are fulfilled directly from state-of-the-art dispatch hubs located in California and Arizona, offering same-day shipping for orders placed Monday through Friday.
Can I obtain a lot-specific Certificate of Analysis (COA) for Selank?
Yes, every batch of Selank includes direct access to a downloadable, lot-traceable COA displaying actual HPLC chromatograms, mass spec graphs, and endotoxin assay results.
What is the molecular weight and sequence of Selank?
Selank has a molecular weight of 751.9 g/mol and a linear amino acid sequence of Thr-Lys-Pro-Arg-Pro-Gly-Pro.
Are PX1 Research peptides approved for human consumption or therapeutic use?
No. All products sold by PX1 Research, including Selank, are strictly for in vitro laboratory research, cellular assays, and preclinical animal investigation. They are never for medical, clinical, or human use.
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.