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.

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.

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.

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.

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.

Approximately 813 Daltons. The molecular formula is C₃₇H₅₁N₉O₁₀S.

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.

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.