Home / Research library / SNAP-8
Compound guide
SNAP-8: what the research covers
An eight-residue peptide designed to interrupt the machinery of neurotransmitter release at the same point botulinum toxin attacks, by competition rather than by cleavage.
What SNAP-8 is
Neurotransmitter release at a synapse requires a vesicle to fuse with the membrane, and that fusion is driven by the SNARE complex — a bundle in which SNAP-25, syntaxin and VAMP wind together. Remove or disable SNAP-25 and the vesicle cannot fuse. Botulinum toxin works by cleaving it.
SNAP-8 takes a different route to the same place. It is an eight residue peptide, acetylated at the amino terminus, modelled on the amino-terminal region of SNAP-25 itself. The idea is competition: a peptide resembling that region can occupy the position SNAP-25 would take in the complex, so the complex assembles less efficiently and release is reduced. No protein is cleaved, and the effect is reversible.
It is an extension of the earlier hexapeptide acetyl hexapeptide-8, with two additional residues intended to improve the interaction. In cosmetic ingredient nomenclature it appears as acetyl octapeptide-3.
What the evidence supports
The mechanistic argument is coherent and the in-vitro work is consistent with competitive interference in SNARE assembly. The gap is between that and the claimed effect on expression lines in skin, which requires the peptide to reach a neuromuscular junction beneath the dermis in sufficient concentration — and an eight residue hydrophilic peptide applied topically faces the stratum corneum, which is an effective barrier to precisely that class of molecule.
Most of the supporting efficacy data comes from manufacturer studies rather than independent trials, and the measured effects are modest where they are reported at all. The honest summary is a well-reasoned mechanism with a delivery problem that the published literature has not convincingly solved. That is a legitimate research question in its own right, and formulation and penetration work is where much of the current interest sits.
Within this catalogue the contrast is with GHK-Cu, whose dermal mechanism acts on cells that are actually present in the dermis, and which therefore does not depend on reaching a deeper target.
How Amino Club supplies it
Supplied lyophilised in sealed vials as SNAP-8, specified at 99% purity or better by HPLC with identity confirmed by mass spectrometry and released against the Certificate of Analysis for its own batch, as described on the lab testing page.
The amino-terminal acetyl group is part of the molecule and adds forty-two to the mass, so the mass determination distinguishes the acetylated peptide from the free-amine sequence. The peptide is water soluble and stable as a dry powder stored below −18 °C; solutions are prepared in small volumes and kept cold. Where the work involves a formulation rather than a buffer, compatibility with the vehicle is worth establishing before scaling up. Diluents are under reconstitution supplies.
Related reading
SNAP-8 sits in the skin and cosmetic research peptides group with GHK-Cu, AHK-Cu, Melanotan I, Melanotan II and glutathione. The hub page sets out the three distinct mechanisms in that group.
Every guide is indexed in the research library. Certificates and storage are covered on the FAQ, quantity pricing through bulk and wholesale.
Research use only
SNAP-8 supplied by Amino Club is a laboratory reference material. It is not a medicine, not a supplement, and not for human or veterinary use, and no dosing guidance or administration protocol is provided. The full terms are in the research use policy.