Snap-8 is a octapeptide analog of SNAP-25 and SNARE complex modulator. With the molecular formula C₄₁H₇₀N₁₆O₁₆S and a molecular weight of 1075.2 g/mol (CAS: 616204-22-9), it structurally mimics endogenous peptides while extending its sequence.
Ac-Glu-Glu-Met-Gln-Arg-Arg-Ala-Asp-NH2


