Semax and Selank are different short peptides with different sequences and research histories. Similar market positioning does not make them analytical substitutes.
What procurement and laboratory teams should review
Verify sequence and theoretical mass
Use separate reference information
Compare only under matched models and endpoints
Keep nicknames out of controlled sample IDs
Define the molecular form before comparing offers
Sequence alone may not fully define a peptide material. Termini, modifications, disulfide pattern, counterion, hydration state and presentation can affect molecular-weight calculations, analytical reporting, solubility and handling.
- Record sequence, termini and every modification explicitly.
- State the requested salt or counterion form.
- Treat solubility and stability as material- and condition-specific.
Questions to resolve before quotation or release
- Which exact sequence is supplied?
- Can identity be matched to the lot?
- Are concentrations molar or mass-based?
Specify both materials explicitly for comparative projects.
Source material and further reading
This guide is informed by the following primary guidance and established technical resources. Always confirm the current version and its applicability to your material and jurisdiction.
HK PEPTIDES materials are supplied for laboratory research and documentation workflows only. They are not intended for human consumption, diagnostic use, therapeutic use, veterinary use or clinical application.