Selank

Selank Peptide: Classification And Research Context

Selank is a synthetic heptapeptide that is structurally classified as an analog of tuftsin, a naturally occurring tetrapeptide sequence. Its amino acid sequence, Thr Lys Pro Arg Pro Gly Pro, extends the tuftsin sequence with a Pro Gly Pro segment. This structural relationship is central to how selank is classified and compared with other short synthetic peptides.

Its defined seven-amino-acid sequence gives researchers a clear molecular basis for identification, analytical verification, and comparison across analytical methods and production batches. These characteristics also make sequence confirmation and purity documentation important when evaluating research-grade material.

Selank Structure And Analytical Characterization

Selank is characterized at the analytical level by its defined primary structure and physicochemical properties. These identifiers form the basis for confirming that a research material matches its stated specification. Three areas are central to that characterization:

Amino Acid Sequence

Selank is a linear heptapeptide with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro (TKPRPGP). Sequence confirmation by mass spectrometry verifies that a material’s molecular identity matches this defined structure.

Molecular Formula And Weight

Selank has a molecular formula of C33H57N11O9 and a molecular weight of approximately 751.9 g/mol. Comparing observed mass data against this theoretical value is a standard identity checkpoint on a batch-specific Certificate of Analysis.

Purity Verification By HPLC

High-performance liquid chromatography (HPLC) separates the target peptide from synthesis-related impurities, such as truncated or deletion sequences, so purity can be reported as a percentage of total material. Our target for every batch is 99%+ purity, with a goal of exceeding 99.5%.

Selank Research Material: Format, Purity, And Documentation Considerations

Research format is only one part of evaluating Selank as a laboratory material. You also need to consider analytical verification, batch documentation, and handling requirements when comparing research-grade options. We focus on three practical factors that help you assess material quality and traceability:

Physical Form And Storage

Selank is supplied as a lyophilized powder. Lyophilized research peptides are typically kept sealed and protected from light and moisture, with storage at -20°C recommended for long-term stability. Researchers should record storage conditions and lot information so material handling is documented within a clearly defined research context.

Analytical Testing And Purity

Purity alone does not provide a complete quality profile. We rely on independent third-party testing that evaluates purity, quantification, sterility, and identity, giving you multiple analytical checkpoints when assessing research material for controlled laboratory work.

Batch Documentation And Traceability

Clear documentation helps researchers verify what was tested and associate analytical records with a specific batch. Our documentation approach for Selank emphasizes transparent, batch-specific records that support material identification, consistency, and traceability throughout a research workflow. 

What Researchers Should Know About Selank

Selank is a research compound best evaluated through its chemical classification, structural identity, analytical quality, and supporting documentation. For qualified research customers, those factors provide a more useful basis for comparison than broad claims about a compound alone. If you are building a stronger foundation for evaluating laboratory materials, our guide to What Are Research Peptides and How Do They Work? provides additional context on research peptide standards and terminology.

At Molecular Solutions Peptides, we aim to give you clear information and dependable materials backed by transparent quality controls. We maintain research-use-only policies, work with independently tested batches, and keep customer support central to our process. Our commitment is straightforward: research-grade quality, independent verification, and customer-first service you can rely on when sourcing materials for qualified laboratory research.

Disclaimer: All products sold by Molecular Solutions Peptides are intended strictly for laboratory research use only (RUO), not for human consumption, diagnostic use, or therapeutic use. These compounds have not been evaluated or approved by the FDA for any purpose. See our RUO Policy for full terms.