In the intricate world of chemical procurement, precision and accuracy are paramount. Whether you are a researcher, a procurement specialist, or a chemist, ensuring you are sourcing the exact compound needed is critical for project success. Two fundamental tools that facilitate this precision are Chemical Abstracts Service (CAS) Registry Numbers and chemical synonyms. Understanding how to use them effectively can streamline your purchasing process, especially when dealing with complex molecules like Boc-(S)-3-Amino-4-(2-methyl-phenyl)-butyric Acid.

The CAS Number: A Universal Identifier

The CAS Registry Number is a unique numerical identifier assigned to every chemical substance described in the open scientific literature. Unlike chemical names, which can be numerous and confusing, a CAS number is unambiguous. For example, Boc-(S)-3-Amino-4-(2-methyl-phenyl)-butyric Acid is assigned the CAS number 270062-90-3. This number is a global standard, recognized by chemists, regulatory bodies, and suppliers worldwide. When searching for a specific chemical, using its CAS number is the most reliable method to ensure you are looking at the correct substance.

The Challenge of Synonyms and Nomenclature

Chemical nomenclature can be complex and often leads to confusion. A single chemical compound can have multiple synonyms due to different naming conventions, common names, trade names, or variations in systematic nomenclature. For instance, Boc-(S)-3-Amino-4-(2-methyl-phenyl)-butyric Acid might also be referred to by names like:

• N-T-BUTOXYCARBONYL-(S)-3-AMINO-4-(2-METHYLPHENYL)BUTANOIC ACID
• Boc-b-HoPhe(2-Me)-OH
• (S)-3-(Boc-amino)-4-(o-tolyl)butanoic Acid

These synonyms can be particularly challenging when searching product databases or communicating with suppliers. A supplier might list a chemical by one synonym, while your internal databases or research papers use another. This is where the CAS number becomes indispensable.

Best Practices for Chemical Purchasing

When you need to buy Boc-(S)-3-Amino-4-(2-methyl-phenyl)-butyric Acid or any other chemical, follow these best practices:

1. Always Verify with the CAS Number: Use the CAS number (270062-90-3 for this specific compound) as your primary search criterion. This eliminates ambiguity and ensures you are viewing the correct product details.
2. Cross-Reference Synonyms: When you find a product listed, check if the CAS number matches your requirement and then review the listed synonyms. This helps you confirm that you are indeed looking at the intended chemical and familiarizes you with alternative names suppliers might use.
3. Communicate Clearly with Suppliers: When requesting a quote or placing an order, always include the CAS number along with any known synonyms. This clear communication minimizes the risk of errors.
4. Check Specifications: Beyond identification, always scrutinize the product specifications, such as purity, physical form, and packaging, to ensure they meet your application's requirements.

By mastering the use of CAS numbers and understanding the prevalence of synonyms, chemical purchasers can navigate the complexities of the market with greater confidence, ensuring they acquire the right materials, like Boc-(S)-3-Amino-4-(2-methyl-phenyl)-butyric Acid, from reputable manufacturers and suppliers.