Peptide Liquid Sprays
Semax Spray
Semax — a synthetic heptapeptide analog of ACTH(4-10) — as a ready-to-use liquid: 50 mg in a 30 mL metered spray bottle.
Identity & storage
- CAS number
- 80714-61-0
- Molecular weight
- ≈813.9 g/mol
- Storage
- Keep the bottle closed and upright, protected from heat and direct light. Follow the temperature and after-opening instructions on the product label.
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Certificate of analysis View available reports and lot details
Product identification & intended use
SKU: RB-SPRY-SEMAX-50MG
For laboratory research use only. Not for human or veterinary use.
Description
Semax is a synthetic seven-amino-acid peptide based on a fragment of adrenocorticotropic hormone, ACTH(4-10), extended with Pro-Gly-Pro. Resolve BioLabs supplies it as a ready-to-use liquid spray: 50 mg in a 30 mL bottle with a metered spray top.
What is Semax liquid spray?
Semax was developed at the Institute of Molecular Genetics of the Russian Academy of Sciences, the same institute behind Selank. The ACTH(4-7) core (Met-Glu-His-Phe) was found to affect learning in animals without acting as a hormone on the adrenal glands; adding Pro-Gly-Pro protected it from rapid breakdown. It is registered in Russia as a liquid preparation but is not approved by the FDA or EMA.
The labeled content is the total amount of compound dissolved in the full 30 mL bottle, so the concentration is that amount divided by 30 mL.
Semax liquid spray specifications
| Sequence | Met-Glu-His-Phe-Pro-Gly-Pro (MEHFPGP) |
|---|---|
| Length | 7 amino acids |
| Molecular formula | C37H51N9O10S |
| Molecular weight | ≈813.9 g/mol |
| CAS number | 80714-61-0 |
| Labeled content | 50 mg per 30 mL bottle (≈1.67 mg/mL) |
| Format | Liquid, metered spray top |
| Catalog reference | RB-SPRY-SEMAX-50MG |
Research background
Semax research looks at brain-derived neurotrophic factor (BDNF) expression, dopaminergic and serotonergic signalling, and ischemic stroke models; in Russia it has been studied clinically in stroke rehabilitation. Its use in Western research is growing but still limited.
Format, storage and handling
Keep the bottle closed and upright, protected from heat and direct light. Follow the temperature and after-opening instructions on the product label.
Testing and documentation
Available reports describe the samples tested. Match the compound, format, strength and lot identifier with your supplied label; a supplier report does not by itself verify current stock. See the report library.
Related research compounds
Sister peptide: Selank liquid spray and Selank vials. Related neurological research: Dihexa. All research sprays.
Semax liquid spray FAQ
What is Semax made from?
It is the ACTH(4-7) fragment extended with Pro-Gly-Pro, giving the heptapeptide MEHFPGP.
Does Semax act like ACTH?
No. The fragment was chosen because it lacks ACTH’s hormonal action on the adrenal glands.
What is the concentration?
About 1.67 mg per mL — 50 mg in 30 mL.
For laboratory research use only. Not for human or veterinary use. Not a drug, food, cosmetic or dietary supplement, and not intended to diagnose, treat, cure or prevent any disease.

