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Semax

ACTH(4-7) heptapeptide · Nootropic / Neuro

Analyzed in the USASemax 5 mg — MX-1 Labs
CAS#
80714-61-0
Formula
C37H51N9O10S
M.W.
813.93 g/mol
Sequence
MEHFPGP
PURITY99% HPLC
RUONot for human or veterinary use

Semax 5 mg (XA5) is a lyophilized research heptapeptide (Met-Glu-His-Phe-Pro-Gly-Pro) — the ACTH(4-7) fragment with a stabilizing Pro-Gly-Pro tail. Supplied as a sterile lyophilized vial with a batch-specific CoA; ≥99% purity verified by HPLC. Strictly for laboratory research.

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MX$519.00

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Certificate of Analysis
Lot
s8a5bju
Expires
2028-04
Chromatographic purity
≥99.3%
Mass Spectral Match
Confirmed
Content
4.83 mg · 96.5% of label
Analyzed by
Krause Analytical · 2026-04
Preview COA
Certificate of Analysis preview
View full COA
Technical specifications
Molecular weight
~813.93 Da
Sequence
Met-Glu-His-Phe-Pro-Gly-Pro (MEHFPGP)
Format
Sterile lyophilized
Purity
≥99% by HPLC (target; batch CoA at launch)
Identity
Confirmed by mass spectrometry (MS)
Storage
Lyophilized; store at −20 °C, protect from light

About Semax 5 mg

Semax 5 mg (XA5) is a synthetic heptapeptide, Met-Glu-His-Phe-Pro-Gly-Pro (MEHFPGP) — the ACTH(4-7) fragment extended with a stabilizing Pro-Gly-Pro tail. It is supplied as a sterile lyophilized vial.

It is studied as a neuropeptide with nootropic and neuroprotective activity; reported mechanisms in preclinical work include modulation of the hippocampal BDNF/trkB system and effects on neurotransmitter and inflammatory gene expression.

This listing is for a research chemical intended strictly for in-vitro and preclinical laboratory use. It is not a drug, supplement, or medical product, and is not for human or veterinary use.

Research applications

Used in laboratory research on neuroprotection, cognition and memory models, and BDNF/neurotrophic signaling.

Storage and handling

Store the lyophilized vial at −20 °C, protected from light. Reconstitute with bacteriostatic water immediately before experimental use.

Scientific references

  1. Medvedeva EV, Dmitrieva VG, Limborska SA, et al. Protective effect of the ACTH(4–7)PGP peptide (Semax) in a rat model of cerebral ischemia–reperfusion. Int J Mol Sci. 2021;22(12). View source on PubMed →

Frequently asked questions

Is it legal to buy research peptides in Mexico?

Yes. Research peptides are sold legally in Mexico strictly for laboratory research use — not for human or veterinary consumption, diagnosis, or treatment. MX-1 Labs sells for research purposes only; at checkout you confirm compliant use under applicable law (COFEPRIS) and your lab's protocols. Nationwide shipping from CDMX.

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