N-Acetyl Semax is an N-terminally acetylated derivative of the seven-residue Semax peptide, supplied as a lyophilised research material. It is distinct from unmodified Semax and N-Acetyl Semax Amidate.
This material is not supplied as a medicine, treatment, supplement or consumer product. It is not for human or veterinary use, consumption or administration, and is not intended to diagnose, treat, cure or prevent any disease.
Compound overview
Research context
Ac denotes the N-terminal acetyl group. The reference sequence, formula and monoisotopic mass above describe the non-amidated molecule characterised by Vanhee et al. N-Acetyl Semax Amidate has a different C-terminal group and is a distinct chemical entity. Verify terminal chemistry against the applicable batch documentation; a product name alone is not structural confirmation.
Published parent-Semax research includes rat experiments examining hippocampal BDNF/TrkB signalling and immune- and vascular-related gene expression in focal brain ischaemia. These studies do not establish that N-Acetyl Semax has the same biological effects. The linked analytical study provides identification context, not evidence of cognitive enhancement or human safety. See the Research tab for study-specific notes.
Reference values do not establish batch identity, purity or suitability. Counterions, water content and formulation can affect measurements. Monoisotopic mass is not the same quantity as average molecular weight.
Batch documentation
Independent analytical documentation is published where available for specific batches and variations. Match the compound, terminal form, vial size and batch identifier to the corresponding report before relying on any result. No published result indicator means no product-specific result is currently displayed for that variation.
Supply and laboratory handling
- Supplied in the vial size selected above.
- Provided as a lyophilised research material.
- Keep the vial sealed and protected from moisture, heat and direct light.
- Use suitable laboratory controls and independently verify identity and concentration for the intended experimental model.
Frequently asked questions
What is N-Acetyl Semax?
An acetylated derivative of Semax, supplied for laboratory research. NA Semax is shorthand for N-Acetyl Semax.
Is it the same as Semax or N-Acetyl Semax Amidate?
No. N-terminal acetylation and C-terminal amidation are separate modifications. Use documentation specific to the selected chemical form.
What does the reference mass describe?
The monoisotopic mass of the non-amidated reference molecule reported in the analytical literature, not a measured result for this batch.
Do parent-Semax papers prove effects for this product?
No. Results for unmodified Semax cannot automatically be assigned to its acetylated derivative. The Research tab identifies which material each paper concerns.
Are laboratory results available?
Check the COA tab for available records and match the product variation and batch identifier before relying on a report.
How should the material be stored?
See the Storage Guidelines tab and follow any batch-specific instructions. No human dosing, administration or injection guidance is provided.
Information reviewed 27 September 2026. Reference identification source: Vanhee et al., Drug Testing and Analysis, 2020, Table 1.














