
Neuroactive peptide
Semax
Semax is a synthetic heptapeptide composed of the 4-7 fragment of corticotropin joined to the Pro-Gly-Pro sequence. In preclinical models, it has been described as acting on neurotrophic factor expression and central neurotransmission systems. It has been studied in models of neuronal plasticity in rodent studies.
$658 MXN / unit
Mass: 5 mg
In stock · SKU SMX-05
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For laboratory research only. Not for human or veterinary use.
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Shipping termsResearch context & mechanism
Semax corresponds to the ACTH(4-7) fragment joined to Pro-Gly-Pro. Rodent studies observed changes in hippocampal BDNF and TrkB; these findings describe molecular responses and do not, by themselves, identify the peptide's binding site.
Technical specifications
Reference specifications describe the material. They do not replace the analytical results for a specific batch.
- Chemical name
- Methionyl-glutamyl-histidyl-phenylalanyl-prolyl-glycyl-proline
- Sequence
- Met-Glu-His-Phe-Pro-Gly-Pro
- Molecular formula
- C37H51N9O10S
- Molecular weight
- 813.92 Da
- CAS number
- 80714-61-0
- Form
- Lyophilized powder
- Appearance
- White to off-white solid
- Purity specification
- Declared in the batch certificate
- Identity
- Declared in the batch certificate
- Solubility
- Soluble in sterile water and bacteriostatic water
- Storage
- −20 °C, protected from light
- Stability after reconstitution
- Keep refrigerated at 2–8 °C and use within the period defined by the laboratory protocol
Batch documentation
Review documentation for the product and variant you are purchasing. A reference specification, a research publication and an individual batch certificate are different sources. Certificate results are accessed with your order details; if documentation is available on request, contact support before relying on it.
Consult batch certificates How to read documentationLaboratory handling
- Reconstitution
- Laboratory procedure: allow the closed vial to reach room temperature, disinfect the septum and slowly transfer the diluent against the inner wall of the vial. Do not shake; gently swirl the vial until fully dissolved. Record the volume, diluent and date in the batch log.
- Storage
- Sealed vial of lyophilized material: store at −20 °C, protected from light and moisture. Avoid repeated freeze-thaw cycles of reconstituted material; aliquot when the experimental design permits.
- Protective equipment
- Handle in a clean work area with a lab coat, nitrile gloves and eye protection. Dispose of vials, tips and sharps according to the laboratory waste procedure.
Research references
- [The efficacy of semax in the tretament of patients at different stages of ischemic stroke]
Zh Nevrol Psikhiatr Im S S Korsakova · 2018 · PMID 29798983
- The peptide semax affects the expression of genes related to the immune and vascular systems in rat brain focal ischemia: genome-wide transcriptional analysis
BMC Genomics · 2014 · PMID 24661604
- Novel Insights into the Protective Properties of ACTH(4-7)PGP (Semax) Peptide at the Transcriptome Level Following Cerebral Ischaemia-Reperfusion in Rats
Genes (Basel) · 2020 · PMID 32580520
- The Potential of the Peptide Drug Semax and Its Derivative for Correcting Pathological Impairments in the Animal Model of Alzheimer's Disease
Acta Naturae · 2025 · PMID 41479572
Frequently asked questions
How is Semax supplied?
Semax is supplied in a sealed vial containing the quantity indicated for the selected variant, with its batch identifier printed on the label.
How is Semax stored in the laboratory?
Store the closed vial at −20 °C, protected from light and moisture. See the laboratory handling section of this page for the complete procedure.



