In the complex landscape of chemical sourcing, especially for the pharmaceutical industry, the Chemical Abstracts Service (CAS) registry number serves as a unique and indispensable identifier. For professionals involved in procurement and R&D, understanding these numbers is crucial for ensuring accuracy, compliance, and efficient supply chain management. This article focuses on CAS number 136207-26-6, which corresponds to Boc-D-2,3,4,5,6-pentafluorophenylalanine.

The CAS registry is a comprehensive database maintained by the American Chemical Society. Each unique chemical substance is assigned a distinct CAS number, acting as a universal identifier that transcends common names, synonyms, and brand names. This is particularly important when dealing with specialized compounds like Boc-D-2,3,4,5,6-pentafluorophenylalanine, which might have numerous other designations or potential for confusion.

For buyers and researchers, the CAS number 136207-26-6 immediately signals the specific chemical entity they are interested in: a protected (Boc), D-isomer of pentafluorophenylalanine. This specificity is vital. The compound's structure, featuring a D-amino acid configuration and a highly fluorinated phenyl ring, dictates its primary applications:

  • Pharmaceutical Intermediates: Essential for building complex drug molecules, especially those requiring chiral centers and enhanced metabolic stability due to fluorination.
  • Peptide Synthesis: Used to create unnatural peptides with tailored properties, such as increased resistance to proteases or modified receptor binding characteristics.
  • Advanced Organic Chemistry: Serves as a specialized reagent for creating novel compounds with unique electronic and steric properties.

When sourcing materials with CAS 136207-26-6, particularly from international manufacturers like those in China, buyers need to be confident in the purity and identity of the product. Reputable suppliers will prominently feature the CAS number on their product listings, specifications sheets, and Certificates of Analysis (CoA). This ensures that what is ordered is precisely what is delivered.

The common purity specification for this intermediate is often 97% or higher. The CAS number helps to ensure that when you request a quote or place an order for 'CAS 136207-26-6', you are comparing apples to apples across different suppliers. This consistency is fundamental for reproducible research and scalable manufacturing processes.

In conclusion, CAS 136207-26-6 is more than just a number; it's a guarantee of specificity and identity for Boc-D-2,3,4,5,6-pentafluorophenylalanine. For B2B procurement, using this identifier when communicating with manufacturers and suppliers, especially those in China, streamlines the purchasing process, minimizes the risk of errors, and helps secure the high-quality pharmaceutical intermediates necessary for critical R&D and production activities.