Name: Buy N-Acetyl Semax Research Peptide Online | Research Peptides Supplies
SKU: RPS-N-ACETYL-SEMAX
Price: 39.99 USD
Availability: InStock

N-Acetyl Semax Research Peptide — Scientific Overview

N-Acetyl Semax is a modified form of Semax — the synthetic heptapeptide derived from adrenocorticotropic hormone (ACTH(4-7)-PGP) — in which an acetyl group has been added to the N-terminus. This acetylation modification is designed to improve the peptide’s stability against aminopeptidase degradation, increasing its effective duration in biological research models. N-Acetyl Semax (also written as NA Semax) shares Semax’s core ACTH(4-7) sequence (Met-Glu-His-Phe) and the Pro-Gly-Pro (PGP) C-terminal extension, retaining the same receptor interactions but with enhanced pharmacokinetic properties. The research rationale for N-Acetyl Semax versus native Semax lies in duration of effect. Semax’s biological activity in brain tissue is limited by rapid peptide degradation by aminopeptidases. Acetylation at the N-terminus blocks this degradation pathway, extending the period during which the peptide can interact with receptors and activate downstream signaling cascades — particularly BDNF upregulation and TrkB receptor activation. Research models suggest N-Acetyl Semax produces more sustained BDNF gene expression upregulation than an equivalent dose of native Semax.

Research Background

The research rationale for N-Acetyl Semax versus native Semax lies in duration of effect. Semax’s biological activity in brain tissue is limited by rapid peptide degradation by aminopeptidases. Acetylation at the N-terminus blocks this degradation pathway, extending the period during which the peptide can interact with receptors and activate downstream signaling cascades — particularly BDNF upregulation and TrkB receptor activation. Research models suggest N-Acetyl Semax produces more sustained BDNF gene expression upregulation than an equivalent dose of native Semax.

Key Research Areas

Cognitive Research: Working memory, attention, and learning in rodent behavioral models
BDNF Research: Sustained BDNF gene expression upregulation and TrkB receptor signaling
Neuroprotection Research: Ischemic damage reduction and oxidative stress neuroprotection studies
Neuroplasticity Research: Hippocampal neurogenesis and synaptic plasticity models
Mood Research: Anxiety, depression-related behavior, and serotonin system interactions
Pharmacokinetics Research: Acetylated vs. native peptide stability and CNS penetration comparison

Technical Specifications

Parameter	Value
Classification	N-Acetylated Semax analog (acetylated ACTH(4-7)-PGP derivative)
Molecular Weight	~890 Da
Purity	≥98% (HPLC-verified)
Form	Lyophilized powder, sealed under argon
Storage	−20°C (long-term)
Documentation	Batch-specific COA (HPLC + Mass Spec)

Storage & Handling (Research Laboratories)

Lyophilized N-Acetyl Semax should be stored at −20°C for long-term preservation, protected from light and moisture. For short-term active research use, 4°C storage is acceptable for up to approximately 4 weeks. Minimize repeated freeze-thaw cycles. Follow standard laboratory peptide reconstitution and handling protocols for all experimental use.

Frequently Asked Questions — N-Acetyl Semax Research

How does N-Acetylation improve Semax’s research properties?

Peptides are degraded at their N-terminus by aminopeptidase enzymes present in serum, nasal mucosa, and brain tissue. Adding an acetyl group (-COCH₃) to the N-terminus of Semax blocks this enzymatic attack, extending the peptide’s half-life in tissue. Research comparing acetylated vs. native Semax has documented longer-duration BDNF mRNA upregulation and sustained behavioral effects in memory paradigms with N-Acetyl Semax. The acetyl group does not appear to block the peptide’s core receptor interactions, making it a pharmacokinetically improved version of the parent compound.

What BDNF effects have been documented for N-Acetyl Semax in research?

Research with Semax and N-Acetyl Semax has consistently documented upregulation of BDNF (Brain-Derived Neurotrophic Factor) gene expression in the hippocampus, cortex, and basal forebrain — regions critical to learning and memory. N-Acetyl Semax produces more sustained BDNF mRNA elevation than equivalent doses of native Semax, consistent with its longer effective half-life. BDNF activates TrkB receptors to promote neuronal survival, synapse formation, and long-term potentiation — processes central to memory consolidation.

How does N-Acetyl Semax differ from Semax Amidate?

N-Acetyl Semax adds an acetyl group to the N-terminus, extending the peptide’s resistance to aminopeptidase degradation. Semax Amidate adds an amide group to the C-terminus, protecting against carboxypeptidase degradation. Both modifications extend the parent Semax peptide’s half-life, but by protecting different termini. Some researchers use N-Acetyl Semax Amidate — which modifies both termini — for the longest-duration research models. Each variant has somewhat different pharmacokinetic profiles that affect experimental design.

Is N-Acetyl Semax approved for human use?

N-Acetyl Semax is not an approved pharmaceutical. Research Peptides Supplies supplies it for qualified laboratory research use only.

What documentation comes with N-Acetyl Semax?

N-Acetyl Semax from Research Peptides Supplies is verified at ≥98% purity by HPLC, with identity confirmed by Mass Spectrometry confirming the correct molecular weight including the N-terminal acetyl group. A batch-specific COA is provided with every order.

⚗️ Research Use Only: This product is strictly intended for qualified laboratory and scientific research use by trained professionals in appropriate laboratory settings. It is not intended for human or veterinary administration, therapeutic use, food supplement applications, or any use outside controlled research environments. Not for human consumption.