A clear Semax research vial on a coloured plaster ledge, with botanicals beside it

About this compound

Semax is a synthetic heptapeptide built from the ACTH(4-7) fragment Met-Glu-His-Phe with a Pro-Gly-Pro tripeptide appended at the C-terminus.

Studied in

Neurotrophic expression
Cognitive models
Neuropeptide research

Compound identity

Compound	Semax
CAS number	80714-61-0
Molecular formula	C37H51N9O10S
Molecular weight	813.92 Da

Specifications

Purity method: HPLC
Appearance: Lyophilized powder
Solubility: Reconstitute per protocol; see Supplies for diluents.
We don't publish a purity percentage here — that figure is only meaningful tied to the lot you actually receive, so it lives on the lot certificate.

Neurobiology

SPUTNIK

Semax

ACTH(4-10) analog, studied in neurotrophic research.

What the research targets

Studied in neurotrophic-factor (BDNF/NGF) expression and cognitive-performance models.

Supply formats

Single units ship from stock. Cases are back-ordered against the same single-unit price.

Stick is newly released — available alongside the vial on every compound.

Single unit

Sample quantity — one unit.

10 mgVial
PS-3157061-10-MG
On verified account
Skinni Stick™ 10 mgSkinni Stick™New
Single-compound Skinni Stick™. Supplied to verified accounts only.
PS-3157061-PEN-10-MG
On verified account

Case — back-order

Ten of one size, at 10× volume pricing.

Case · 10 × 10 mg
Back-order — 15% off the single-unit price.
PS-3157061-C10-10-MG
On verified account
Case · 10 × Skinni Stick™ 10 mgNew
Back-order — 15% off the single-unit price.
PS-3157061-C10-PEN-10-MG
On verified account

One-time verification of professional or institutional affiliation. No payment is taken on this site.

Research use only

This compound is supplied exclusively for laboratory research by qualified professionals and institutions. It is not a drug, dietary supplement, or cosmetic, and is not for human or veterinary use. We publish no dosing, administration, or human-use guidance of any kind, and nothing here should be read as a claim about an effect in people.

From the research library

Cited summaries of the published work behind Semax — what was studied, in which model, and what was measured.

All articles

Neurobiology

Neuropeptides: ACTH fragments, a sleep factor, and VIP

Three research lines with very different provenance — Soviet-era clinical pharmacology, a 1977 isolation that never fully resolved, and a well-characterised receptor system.

September 9, 20269 min read