Peptide

Semax

Name: Semax
Brand: Prime Peptide Solutions
SKU: SEMAX
Price: 33.99 USD
Availability: InStock

✓ COA Verified >99% Purity HPLC + MS Tested

Synthetic heptapeptide derived from ACTH 4-10. Research grade, >99% purity, third-party tested.

Select Size

10mg

~~$39.99~~ $33.99

In stock

Bundle & Save

The 15% sale is already applied to every vial. Bundle savings (10% off 3+, 15% off 5+, 20% off 10+) pause during the sale and return when it ends.

Reconstitution calculator →

Complete your order

Bacteriostatic Water

needed to reconstitute

~~$9.99~~$8.49

SSL Secure

COA Verified

Ships from USA

Same-Day Dispatch

Supplied as: Lyophilized powder in a sealed vial. Bacteriostatic water sold separately.
Storage: 2–8 °C refrigerated, or −20 °C for long-term storage. Keep refrigerated after reconstitution.
Delivery: Dispatched the same business day; shipping calculated at checkout, free on orders of $199.00 or more. US addresses only.

— Product Overview

Description

Semax is a synthetic heptapeptide derived from a fragment of adrenocorticotropic hormone (ACTH 4-10). It is commonly studied in laboratory settings focused on melanocortin receptor research and neurotrophic factor expression pathways.

Research & comparisons

Semax: Research Overview, Mechanism and Lab Handling

Research article · Sep 2026

Read →

Selank vs Semax

Head-to-head comparison

Compare →

Reconstitution calculator

Preset for Semax

Open →

Frequently Asked Questions

What is semax?

Semax is a synthetic heptapeptide (Met-Glu-His-Phe-Pro-Gly-Pro) derived from a fragment of adrenocorticotropic hormone (ACTH 4-10). It was developed at the Institute of Molecular Genetics in Russia for research applications.

Is semax FDA-approved?

No. Semax is not approved by the U.S. Food and Drug Administration. It is sold strictly as a research compound for laboratory study and is not intended for human consumption, treatment, or diagnosis.

What purity is your semax?

Our semax is verified at >99% purity by independent third-party HPLC analysis. A Certificate of Analysis is provided with each batch and viewable on our COA page.

How is semax different from selank?

Despite both being Russian-developed heptapeptides, semax and selank are structurally and pharmacologically unrelated. Semax is derived from ACTH 4-10; selank is derived from tuftsin. They have been studied in different molecular pathways. See our selank vs semax comparison page for details.

How should semax be stored?

Lyophilized semax is stable refrigerated for short-term storage. For long-term storage, published handling protocols recommend -20°C. After reconstitution with bacteriostatic water, vials are typically stored refrigerated and used within standard research timelines for short peptides.

What is the molecular weight of semax?

Approximately 813 Daltons. The molecular formula is C₃₇H₅₁N₉O₁₀S.

Do you provide a Certificate of Analysis?

Yes. Every batch of semax we ship includes a Certificate of Analysis with third-party HPLC and mass spectrometry verification. COAs are also publicly viewable on our COA page.

Is semax the same as the original Russian version?

Our semax is manufactured to the same specifications described in published Russian research literature (sequence Met-Glu-His-Phe-Pro-Gly-Pro). It is sold strictly as a research-grade reference compound, not as any approved pharmaceutical product.