Navigating the world of biochemical research requires precision, especially when identifying specific compounds. One of the most critical identifiers for any researcher is the CAS Number. Whether you are working with a simple peptide or a complex polypeptide, these unique n Peptide I | C69H114N18O22S | CID 16131185 - PubChem - NIH umerical identifiers act as the fingerprint for chemical substances. In my own experience sourcing materials for laboratory studies, I have found that verifying the CAS No. is the first step toward ensuring experimental reproducibility.
The Role o PolyPeptide - Peptides, Peptide Synthesis and Custom f CAS Numbers in Peptide Identification
A CAS Number (Chemical Abstracts Service) provides a unambiguous way to identify a specific c RGD (Arg-Gly-Asp) Peptides is a cell adhesion motif which can mimic cell adhesion proteins and bind to integrins. Quality confirmed by NMR & HPLC. hemical substance, regardless of the various synonyms or trade names it might carry. For instance, when searching for Pancreatic Polypeptid Pancreatic Polypeptide (human) ; Purity, ≥95% (HPLC) ; CAS Number, 75976-10-2 ; PubChem ID, 24868176 ; InChI Key, HFDKKNHCYWNNNQ-YOGANYHLSA-N ; Smiles e, Human (CAS: 75976-10-2), having the exact identifier prevents confusion with other variants or biological oligomers.
In my work, I frequently encounter materials like RGD (Arg-Gly-Asp) Peptides, which are essential for studying cell adhesion mot Pancreatic Polypeptide, human. CAS Number: [75976-10-2]. Molecular Weight: 4181.77. Molecular Formula: C185H287N53O54S2. * Refer to Certificate of Analysis for ifs. Knowing the specific CAS Number: 99896-85-2 (or related identifiers for specific salt forms) allows me to cross-reference purity and structural data with databases like PubChem.
Key Identifiers and Their Applications
When reviewing technical documentation, you will often see a variety of formats. Here are some examples of how these identifiers appear in professional literature:
* Pancreatic Polypeptide (human): Identified by CAS Number, 75976-10-2, this is a critical molecule in NPY receptor research.
* Beta-Amyloid Peptide (1-42): Frequently referenced by CAS number 107761-42-2, which is essential for characterizing its molecular weight and empirical formula.
* Synthetic Substrates: Molecules like the LZ1 peptide carry the CAS No.: 1423743-97-8, highlighting the importance of cataloging even the most niche synthetic compounds.
Why Accuracy Matters in Peptide Synthesis
In the realm of peptide chemistry, structural integrity is paramount. Whether you are performing Solid Phase Peptide Synthesis (SPPS) Polypeptides are biomaterials composed of repeating amino acid units linked by a peptide bond. Polypeptides can conform to different three-dimensional using reagents like Fmoc-Gly-OH (CAS Number: 29022-11-5) or analyzing a complex protein chain, the CAS No ensures that the starting materials meet the required purity standards—often $\ge95\%$ or higher.
I have observed that reputable suppliers, such as those associated with the PolyPeptide Gr Pancreatic Polypeptide, Human (CAS: 75976-10-2) is diabetes peptide for research use only. PP is a peptide hormone, secreted by the pancreas, oup or PolyPeptide Labs, prioritize these identifiers to maintain transparency. When you examine a Certificate of Analysis (CoA), you are essentially confirming that the polypeptide in your hand matches the documented CAS profile.
Navigating Technical Data
If you are just beginning to curate your laboratory inventory, keep these tips in mind:
1. Always verify the CAS: Do not rely on common names alone. A peptide can have multiple modifications, and each modification may have a different CAS number.
2. Check the Chemical Structure: Use the CAS No to pull the chemical formula and molecular weight from trusted scientific databases. For example, understanding that a specific polypeptide has a specific molecular weight helps in calculating molarity for your assays.
3. Storage and Handling: Many, such as those with CAS number: 59763-91-6, require specific environmental controls to prevent degradation.
Conclusion: A Commitment to Research Integrity
My journey into the science of biological polymers has taught me that the CAS No is more than just a label—it is a foundation for legitimate, verifiable research. Whether you are investigating the peptide bond or evaluating the synthesis of a novel polypeptide, maintaining a rigorous database of these identifiers is a hallmark of a disciplined researcher.
By prioritizing the use of accurate CAS identifiers, we ensure that our work remains consistent, reproducible, and aligned with the global standards of the life sciences Empirical Formula (Hill Notation):. C199H307N53O59S ; CAS Number: 107761-42-2 ; Molecular Weight: 4417.95 ; UNSPSC Code: 12352202 ; NACRES: NA.26. community. Always remember that for any polypeptide, the CAS No is your most reliable guide to identifying the right material for your specific research goals.