Maple Semax vs Selank: Research Comparison
Comparing two Russian-developed neuropeptides with distinct parent sequences. Understanding ACTH-derived vs Tuftsin-derived mechanisms for neuroscience research.
Quick Comparison
What Is Semax?
Semax is a synthetic heptapeptide with the sequence Met-Glu-His-Phe-Pro-Gly-Pro. It was developed at the Institute of Molecular Genetics in Russia as a derivative of ACTH(4-7), the biologically active fragment of adrenocorticotropic hormone. The C-terminal Pro-Gly-Pro addition (PGP tripeptide) enhances stability and bioavailability.
Semax research applications focus on:
- Brain-derived neurotrophic factor (BDNF) expression
- Neurotrophic signaling pathway studies
- Cognitive function and memory research models
- Neuroprotective mechanism investigations
Semax is particularly interesting for researchers studying neurotrophic factors and their role in neural plasticity, as it has been reported to influence BDNF and other growth factor expression in laboratory models.
What Is Selank?
Selank is a synthetic heptapeptide with the sequence Thr-Lys-Pro-Arg-Pro-Gly-Pro. It was developed at the same Russian institute as Semax but derives from tuftsin (Thr-Lys-Pro-Arg), a natural tetrapeptide immunomodulator. Like Semax, it incorporates the stabilizing Pro-Gly-Pro C-terminal modification.
Selank research applications include:
- GABAergic system modulation studies
- Enkephalinase inhibition research
- Anxiolytic mechanism investigations
- Immunomodulatory pathway studies
Selank’s dual heritage from tuftsin (immunomodulatory) combined with central nervous system activity makes it an interesting research tool for studying neuroimmune interactions and stress-related signaling pathways.
Why Documentation & Testing Matter
In research settings, the reliability of results depends entirely on the quality and consistency of materials used. Third-party verification provides an objective baseline for researchers to trust their experimental inputs.
Third-Party Testing
Independent laboratory verification ensures unbiased purity and identity confirmation.
Batch Consistency
Each production batch is individually tested and documented for reproducibility.
≥98% Purity Standard
HPLC and mass spectrometry verification for research-grade quality assurance.
Transparent COAs
Complete Certificates of Analysis available for every product and batch.
Research-Grade Standards from Maple Research Labs
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Independent Lab Testing
Every batch verified by third-party laboratories for purity and identity confirmation.
Research-Only Compliance
Clear labeling and documentation designed for legitimate research applications.
Consistent Quality Standards
Rigorous QC protocols ensure batch-to-batch consistency for reliable research outcomes.
Frequently Asked Questions
What are the structural origins of Semax and Selank?
Semax is derived from ACTH(4-7), the 4-7 fragment of adrenocorticotropic hormone, with a C-terminal Pro-Gly-Pro addition. Selank is derived from tuftsin (a natural immunomodulatory tetrapeptide) with the same Pro-Gly-Pro modification for stability.
How do their primary research focuses differ?
Semax research typically focuses on cognitive function, neurotrophic factor expression (particularly BDNF), and neuroprotective mechanisms. Selank research emphasizes anxiolytic mechanisms, GABAergic modulation, and immunomodulatory pathways.
Why do both peptides have similar stability modifications?
Both peptides incorporate a C-terminal Pro-Gly-Pro (PGP) sequence developed at the Institute of Molecular Genetics. This modification enhances proteolytic stability and extends the peptides’ activity in research models.
What documentation should researchers expect for these peptides?
Both should include COAs with HPLC purity (≥98%), mass spectrometry identity confirmation, and peptide content analysis. Sequence verification is important given their specific modified structures.
Are Semax and Selank available for research in Canada?
Both peptides are available as research compounds from qualified suppliers. They are labeled for research use only with appropriate documentation for laboratory applications in Canada.
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Explore Research-Grade Compounds
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Research Products Referenced
View the research-grade peptides discussed in this comparison, each with batch-specific COA verification: