Quality and Production of Acetyl Octapeptide-3 (SNAP-8)

Acetyl Octapeptide-3 (SNAP-8) is a synthetic peptide used in cosmetic formulations as an anti-wrinkle ingredient. It is typically produced through solid-phase peptide synthesis (SPPS) and must undergo strict quality control to ensure purity, stability, and safety for cosmetic applications.

• Molecular formula: C₄₁H₇₀N₁₆O₁₆S

• Molecular weight: ~1075.16 g/mol

• CAS number: 868844-74-0

• Peptide sequence: Ac-Glu-Glu-Met-Gln-Arg-Arg-Ala-Asp-NH₂

The compound is normally supplied as a white to off-white lyophilized powder that is water-soluble and suitable for cosmetic formulations.

Production of Acetyl Octapeptide-3 (SNAP-8)

1.  Raw Materials

Production begins with amino acids and reagents commonly used in peptide synthesis:

• Protected amino acids (Fmoc-Glu, Fmoc-Met, etc.)

• Solid resin (e.g., Wang or Rink amide resin)

• Coupling reagents (HBTU, HATU, or DIC)

• Deprotection reagents (piperidine)

• Solvents (DMF, DCM)

These materials must meet pharmaceutical or cosmetic-grade purity standards.

2. Synthesis Process

The peptide is produced through solid-phase peptide synthesis (SPPS).

Step 1: Resin Loading

• The first amino acid is attached to a solid resin support.

Step 2: Deprotection

• The Fmoc protecting group is removed using piperidine.

Step 3: Coupling Reaction

• The next amino acid is coupled using an activating reagent such as HBTU or HATU.

Step 4: Chain Elongation

• The cycle of deprotection → coupling → washing continues until the full octapeptide chain is formed.

Step 5: Acetylation

• The N-terminal is acetylated to produce Acetyl Octapeptide-3 (SNAP-8).

Step 6: Cleavage

• The peptide is cleaved from the resin using TFA cleavage solution.

Step 7: Purification

• The crude peptide is purified by reverse-phase high-performance liquid chromatography (RP-HPLC).

Step 8: Lyophilization

• The purified peptide solution is freeze-dried (lyophilized) to obtain stable powder.

Quality Control of Acetyl Octapeptide-3 (SNAP-8)

Quality control ensures batch consistency and safety.

1. Purity Analysis

• HPLC (High-Performance Liquid Chromatography)

• Purity requirement typically ≥98–99%.

2. Identity Confirmation

• Mass spectrometry (MS) verifies molecular weight.

• LC-MS/MS methods can quantify Acetyl Octapeptide-3 (SNAP-8) with high accuracy and repeatability.

3. Physicochemical Tests

Common parameters include:

• Appearance (white powder)

• Solubility in water

• pH stability (typically stable between pH 3–8)

• Peptide sequence verification

4. Microbiological Tests

For cosmetic ingredients:

• Total microbial count

• Endotoxin screening

• Sterility tests

Many manufacturers also perform sterile filtration before lyophilization.

Production Specifications

Typical industrial specifications include:

Acetyl Octapeptide-3 (SNAP-8) is commonly stored in sealed, light-protected containers to maintain stability.

Formulation and Manufacturing Considerations

When incorporated into cosmetic products:

• Added during the cooling phase (<40 °C) to prevent degradation.

• Typical concentration in formulations: 3–10% peptide solution.

• Compatible with other peptides and skincare actives.

Quality Documentation

Reputable suppliers provide:

• Certificate of Analysis (COA)

• MSDS (Material Safety Data Sheet)

• HPLC chromatogram

• Mass spectrum data

These documents confirm batch purity, identity, and safety compliance.

Summary

The quality and production of Acetyl Octapeptide-3 (SNAP-8) rely on:

• Solid-phase peptide synthesis (SPPS) for precise peptide formation.

• HPLC purification to achieve ≥99% purity.

• Analytical verification using HPLC, LC-MS/MS, and other techniques.

• Strict manufacturing standards such as GMP and sterile processing.

• Proper storage and formulation conditions to maintain stability.

If you want, I can also explain:

• Industrial-scale manufacturing process of Acetyl Octapeptide-3 (SNAP-8) (factory production flow chart)

• Quality standards used by cosmetic peptide suppliers (USP / ISO / GMP)

• Analytical methods used in peptide QC (HPLC, MALDI-TOF, LC-MS)

These are usually required when writing a research paper or cosmetic ingredient monograph on Acetyl Octapeptide-3 (SNAP-8).