When exploring the world of biochemistry and lab-grade compounds, few substances pique curiosity quite like the GHK peptide. As someone who has spent significant time researching experimental compounds for personal study, I have found that accurate data—specifically regarding molecular weight—is the cornerstone of any legitimate experimental workflow. Navigating the technical documentation for these substances requires a keen eye for detail, as variations in reported data can often lead to confusion.
The Complexity of GHK Peptide Molecular Weight
The primary challenge I encou Molecular Weight. 401.91; Formula. C14H22CuN6O ; CAS No. 89030-95-5 ; Appearance. Solid ; Color. Blue to purple.Read more ntered when reviewing technical sheets is that the reported molecular weight for GHK and its copper-complexed form (GHK-Cu) varies depending on the specific salt form, hydration state, and purity levels.
In my own review of various analytical certificates, Molecular Formula, C14H23CuN6O4+.Molecular Weight, 402.92. InChI Key, NZWIFMYRRCMYMN-UHFFFAOYSA-M. Synonyms. Copper peptide (GHK-Cu); BCP32687; SY253680 Read more I have noted that pure GHK typically presents with an exact mass of 340.1859. However, once you transition to the copper-complexed version, the values shift significantly. Many researchers will encounter a molecular weight: 340.38 g/mol in standard documentation, while other high-purity samples are cited at a molecular weight: 401.91 g/mol or approximately 403 Daltons.
Why Does the Weight Vary?
The discrepancies in these numbers are not necessarily errors but rather reflections of the molecular formula and the presence of additives or counter-ions. For instance:
* TFA Salts: When dealing with a GHK-Cu TFA salt, the weight can jump to 515.93 g/mol due to the addition of trifluoroacetic acid.
* Complexation: The addition of copper (Cu) to the Gly-His-Lys sequence changes the geometry and the mass, leading to figures like 403.92 g/mol or 404.3 in various databases.
* Measurement Standards: Some sources report values like 371.5 g/mol, while others may show 748.346 g/mol depending on the specific ionization state and experimental conditions used in the lab.
Practical Observations in Laboratory Settings
When I source peptide materials for my personal research, I always prioritize the Certificate of Analysis (COA). If you are looking at a molar mass: 340.38 g/mol, ensure that the documentation specifies whether this includes the copper complex or refers to the base peptide.
I have noticed that GHK is often stored as a blue or purple powder. Whether the weight, 401.91 or the molar mass: 401.91 g/mol is identified on your specific vial, it is crucial to maintain consistency in your calculations. I personally find that keeping a log of the exact molecular weight, 402.92 or 400.9 (depending on the batch) allows for more precise preparation of experimental solutions.
Integrating Data for Reliable Research
For those ne GHK-Cu Copper Peptide (copper tripeptide-1) w to this field, understanding that peptide research is highly technical is vital. I have often had to cross-reference the molecular weight: 403.9 provided by a supplier against the molecular weight, 401.91 listed in independent databases to ensure the substance is what I expect.
Whether you are working with a 340.08 g/mol sample or Copper tripeptide | Endogenous Metabolite a higher-mass compound, always verify the molecular formula provided by the manufacturer. Discrepancies in the chemical structure can signal impurities, which can negatively impact the integrity of your research project.
Key Takeaways for Researchers
* Always check the COA: Never rely solely on the label. The molecular weight can vary by batch.
* Storage Matters: These compounds are sensitive. Proper storage at recommended temperatures is essential to maintain the structural integrity of the peptide.
* Terminology: Familiarize yourself with Physical Appearance: Blue powder ;PeptidePurity: ≥99% ; Sequence: Gly-His-Lys(Cu2+) ;MolecularMass: 340.38 ; CAS NO.: 300801-03-0 Read more the di Copper tripeptide (GHK-Cu), 10 grams fference between "exact mass" and Molecular Weight: 401.9; GHK-Cu (Glycyl-Histidyl-Lysine-Copper) is a naturally occurring copper-binding peptide with powerful regenerative and anti-aging Read more "molar mass" to avoid confusion during your experimental setup.
By maintaining a rigorous approach to these specifications, you ensure that your personal research into the GHK peptide remains both safe and scientifically sound. Always prioritize transparency and verification, as these are the hallmarks of a dedicated researcher.