In the world of high-performance cosmetic chemistry, enthusiasts often find themselves navigating complex technical specifications to better understand the compounds they integrate into their personal care routines. One such compound that frequently appears in discussions regarding structural integrity and skin health is acetyl tetrapeptide 9 molecular weight. As someone deeply interested in the science of p Acetyl tetrapeptide-9(Dermican LS 9837). CAS No. : 928006-50-2, Molecular Weight : 539.54. MDL No. : MFCD30830312, Purity/ Specification : Molecular Formula : C eptides, I have spent considerable time researching the biochemical profile of this fascinating ingredient.
Defining the Compound: The Basics of Acetyl Tetra CAS Number. 820959-17-9 ; Molecular Formula. C20H28N8O ; Formula Weight. 492.5 ; Purity. ≥98% ; SMILES. OC([C@@H](NC([C@H](CO)NC([C@@H](NC(CCNC(C)=O)=O)CC1=CN=CN1)= peptide 9
Acetyl Tetrapeptide-9, often recognized by its trade name De 3 Nov 2025 — Color: Not determined. · Odor: Characteristic. · Structural Formula. C22H33N7O9 • XC2H4O2. · Molecular Weight. 539.5 g/mol. · Storage Buffer. · rmican LS 9837, is a synthetic peptide that has gained significant attention. When looking at the chemical data, the molecular weight is a critical parameter for those of us who appreciate precision. Across various reputable databases, the value is consistently cited as 539.54 g/mol or 539.5392 depending on the precision of the analytical equipment used. Some sources may round this to 539.5 g/mol or 539.55 g/mol, but the consensus remains within this narrow range.
The peptide is formally defined by the chemical formula C22H33N7O9. Its sequence, represented as Ac-Gln-Asp-Val-His (or Ac-QDVH), is what gives it its unique characteristics. In my own review of product documentation, I have noted that the formula weight: 539.5 is a standard figure provided in the MSDS (Material Safety Data Sheet) for high-purity batches.
Distinguishing Between Peptides
It is easy to become Acetyl tetrapeptide-2 confused by the nomenclature, especially given that many cosmetic peptides share similar structures. For instance, while researching, one might encounter Acetyl Tetrapeptide 2 (often associated with 565.6 g/mol) or Acetyl Tetrapeptide 5 (which typically has a molecular weight: 492.49 or formula weight: 492.5). While these are all part of the Acetyl Tetrapeptide family, their distinct weights reflect their unique amino acid sequences and functional goals.
I have found that understanding these differences is essential for anyone trying to build a knowledgeable collection of raw materials. Whether you are comparing 539.54 g/mol against 492.5 g/mol, the data helps clarify why each peptide is utilized for different purposes within a formulation.
Why Molecular Weight Matters
For those of us who enjoy the DIY side of skincare, the molecular weight is not just a random number; it is an indicator of how a substance might interact with the skin's surface. Acetyl Tetrapeptide-9 is widely categorized as a "signal peptide" used in skin care. Because of its specific size and structure, it is designed to support the extracellular matrix by optimizing the functionality of collagen fibers.
During my personal testing, I noticed that high-qu CAS 928006-50-2 Cosmetic peptide acetyl tetrapeptide-9 ality, pure versions—often appearing as a fine white powder—are remarkably stable at room temper 3 Nov 2025 — Color: Not determined. · Odor: Characteristic. · Structural Formula. C22H33N7O9 • XC2H4O2. · Molecular Weight. 539.5 g/mol. · Storage Buffer. · ature. This stability, combined with a precise molecular weight, makes it a reliable addition for those focusing on maintaining a firm and resilient skin appearance.
Practical Considerations and Technical Observations
When sourcing these materials, I always prioritize entities that provide a full Certificate of Analysis (COA). If you see a molecular weight listed as 498 Da (average), it is usually an estimation; however, for the pure synthetic form, the 539.53 to 539.54 range is the industry standard.
Whether you are looking into Acetyl Tetrapeptide 9 for its role in structural support or simply curious about the weight of these com 9,12-tetraazatetradecanoic acid; Acetyl Tetrapeptide-9 (acetate); Formula: C22H33N7O9 Molecular Weight: 539.5. Purity: N/A Form: Solid Color: N/A Storage plex molecules, the technica Acetyl tetrapeptide-9 l clarity provided by the 928006-50-2 CAS number ensures you are tracking the correct ingredient. My experience has shown that when you understand the foundational chemistry, you can better appreciate the role these peptides play in modern skincare innovation.
By focusing on verified data—such as the exact mass and the specific sequence—we move beyond marketing fluff and into the realm of genuine chemical appreciation. It is this attention to detail that separates a casual interest from a truly informed pursuit of cosmetic excellence.