Acetyl Hexapeptide-38 CAS 1400634-44-7 Bulk Supply Guide
Acetyl Hexapeptide-38 HPLC Purity ≥98% and CAS 1400634-44-7 Verification
For procurement managers overseeing active ingredient sourcing, verifying the chemical identity of Acetyl Hexapeptide-38 (CAS 1400634-44-7) is the primary step in vendor qualification. High-performance liquid chromatography (HPLC) is the standard method for determining purity, with cosmetic grade specifications typically requiring a minimum of 98% purity. However, purity alone does not guarantee sequence integrity. Mass spectrometry (MS) should be utilized alongside HPLC to confirm the molecular weight of 701.8 g/mol and the specific amino acid sequence: Ac-Ser-Val-Val-Val-Arg-Thr-NH2.
Discrepancies in retention times during HPLC analysis often indicate the presence of deletion sequences or truncated peptides, which can dilute the efficacy of the final skincare active formulation. When evaluating suppliers, request chromatograms that show the separation of the main peak from related impurities. For a deeper understanding of supply chain verification, refer to our manufacturer audit bulk supply chain resource. Ensuring the CAS number matches the certificate of analysis prevents substitution with lower-grade analogs often marketed under trade names like Adifyline.
Endotoxin Levels <0.1 EU/mg for Cosmetic Applications and Safety Compliance
While this peptide is primarily utilized for its volumizing properties, safety parameters regarding biological contaminants remain critical for topical applications. Endotoxin levels should be maintained below 0.1 EU/mg to minimize the risk of skin irritation or inflammatory responses, particularly in products designed for sensitive areas such as the face or décolletage. Although this is not a pharmaceutical injectable, maintaining low bioburden standards aligns with good manufacturing practices for high-quality cosmetic grade ingredients.
Microbial limits testing should cover total aerobic microbial count (TAMC) and total yeast and mold count (TYMC). Procurement specifications should explicitly state these limits to ensure the raw material does not compromise the preservation system of the final emulsion. Consistent testing across batches ensures that the volumizing peptide does not introduce instability into the preservation challenge test results of the finished goods.
Stability in Emulsion Systems at pH 5.5-6.5 with Preservative Compatibility
Acetyl Hexapeptide-38 functions optimally within a pH range of 5.5 to 6.5. Deviations outside this window can lead to hydrolysis of the peptide bonds, specifically affecting the acetyl group at the N-terminus. From a formulation engineering perspective, compatibility with common preservative systems such as phenoxyethanol and ethylhexylglycerin is generally stable, but caution is required with oxidizing agents.
A critical non-standard parameter often overlooked in basic COAs is the solubility kinetics in glycol bases at varying temperatures. In our field experience, we have observed that when dispersing the powder into propylene glycol at temperatures below 15°C, significant viscosity shifts occur, leading to incomplete dissolution and potential nozzle clogging during filling operations. We recommend pre-heating the glycol phase to 25°C before addition to ensure homogeneous distribution. Furthermore, this adipogenesis activator should not be mixed with strong chelating agents in the aqueous phase without prior stability testing, as metal ion interactions can accelerate degradation. Understanding these handling nuances prevents batch rejection during manufacturing.
Certificate of Analysis (COA) Parameters and Batch Consistency Metrics
Batch-to-batch consistency is vital for maintaining the performance of the final cosmetic product. A comprehensive COA should include not only purity and identity but also physical characteristics such as appearance, loss on drying, and residue on ignition. Below is a comparison of typical technical parameters expected for cosmetic manufacturing versus research-grade material.
| Parameter | Cosmetic Grade Specification | Research Grade Specification | Test Method |
|---|---|---|---|
| Purity (HPLC) | ≥ 98.0% | ≥ 95.0% | HPLC Area Normalization |
| Identity (MS) | Matches Structure | Matches Structure | Mass Spectrometry |
| Endotoxin | < 0.1 EU/mg | Not Typically Tested | LAL Method |
| Heavy Metals | < 10 ppm | < 20 ppm | ICP-MS |
| Loss on Drying | < 5.0% | < 8.0% | Gravimetric |
| Microbial Limit | < 100 CFU/g | Not Typically Tested | Plate Count |
Procurement teams should verify that the COA is batch-specific and not a generic template. Variations in loss on drying can indicate moisture uptake, which affects the accurate weighing of the active during compounding. If specific numerical data for a current batch is required, please refer to the batch-specific COA provided by the supplier.
Bulk Packaging Specifications and Storage Conditions for Manufacturing
For large-scale production, Acetyl Hexapeptide-38 is typically supplied in aluminum foil bags lined with polyethylene, placed within fiber drums or cardboard boxes. Common net weights include 1kg, 5kg, and 25kg units. For liquid formulations, the material may be supplied in solution, requiring HDPE containers with secure sealing to prevent leakage during transit. Physical packaging must ensure protection from light and moisture, as the peptide is hygroscopic.
Storage conditions should strictly adhere to a cool, dry environment, ideally between 2°C and 8°C for long-term stability, though short-term storage at ambient temperature is often acceptable during manufacturing workflows. NINGBO INNO PHARMCHEM CO.,LTD. ensures that all shipping containers are labeled with appropriate handling instructions to maintain integrity during logistics. For detailed logistics planning, consult our bulk procurement guide for B2B. We focus on robust physical packaging solutions, such as double-lined drums, to prevent contamination without making regulatory environmental claims.
Frequently Asked Questions
How is the peptide sequence verified during quality control?
Sequence verification is conducted using Mass Spectrometry (MS) to confirm the molecular weight and amino acid composition matches Ac-Ser-Val-Val-Val-Arg-Thr-NH2. This ensures no deletion sequences are present.
What metrics ensure batch consistency for large orders?
Batch consistency is monitored through HPLC purity profiles, retention time matching, and physical property testing such as loss on drying. Each batch receives a unique COA for traceability.
What regulatory documentation is required for cosmetic use?
Documentation typically includes the COA, MSDS, and a statement of composition. Specific regulatory filings depend on the target market's cosmetic regulations and should be verified by the customer's regulatory affairs team.
Sourcing and Technical Support
Reliable sourcing of Acetyl Hexapeptide-38 requires a partner who understands both the chemical specifications and the practical challenges of manufacturing integration. NINGBO INNO PHARMCHEM CO.,LTD. provides technical support to ensure smooth incorporation of this active into your formulation lines. We prioritize transparency in testing data and physical shipping standards to support your production schedules. Partner with a verified manufacturer. Connect with our procurement specialists to lock in your supply agreements.