In the complex world of chemical procurement, precise identification is paramount. Whether you are a researcher in a lab, a formulator in a manufacturing plant, or a purchasing manager overseeing raw material acquisition, ensuring you are dealing with the exact chemical compound is critical. This is where CAS Registry Numbers, often simply referred to as CAS numbers, play an indispensable role. They provide a unique, unambiguous identifier for chemical substances, making the process of sourcing and trading chemicals like tert-butyl ester (CAS 149709-58-0) far more efficient and secure.

What is a CAS Number?

Developed by the Chemical Abstracts Service (CAS), a division of the American Chemical Society, CAS numbers are a unique numerical identifier for chemical substances. Each CAS number is assigned to a single chemical compound, regardless of its common name, trade name, or systematic IUPAC name. This universality means that a CAS number like '149709-58-0' will always refer to the same specific chemical entity, tert-butyl ester, across different languages, databases, and suppliers worldwide.

Why CAS Numbers are Crucial for Buyers

For B2B buyers, understanding and utilizing CAS numbers is not just a matter of good practice; it's essential for several reasons:

• Unambiguous Identification: Many chemicals have multiple names, leading to confusion. A CAS number eliminates this ambiguity. When you request a quote for 'tert-butyl ester,' you should always verify its CAS number to ensure you're comparing the correct product from different suppliers.
• Global Standardization: CAS numbers are recognized internationally, facilitating global trade. When you purchase from a Chinese manufacturer or any other international supplier, using the CAS number ensures both parties are referring to the same compound. This is particularly important when looking to buy a specific chemical intermediate like tert-butyl ester.
• Regulatory Compliance: Regulatory bodies worldwide use CAS numbers to track and manage chemicals. Having the correct CAS number on your purchase orders and documentation aids in regulatory compliance and safety data sheet (SDS) management.
• Database Searching: Searching scientific literature, supplier catalogs, and chemical databases becomes much more efficient when using CAS numbers. If you are looking for information on 'tert-butyl ester' or its suppliers, including 'CAS 149709-58-0' in your search terms will yield more precise results.
• Quality Assurance: While a CAS number identifies a substance, it doesn't inherently guarantee purity. However, when combined with other specifications like purity percentage (e.g., ≥99% for tert-butyl ester), it provides a strong foundation for quality assurance. A reputable manufacturer will always prominently feature the correct CAS number on their product specifications.

Leveraging CAS Numbers in Procurement

When you are sourcing chemical intermediates, always include the CAS number in your inquiries. For example, when looking for a 'tert-butyl ester manufacturer,' specify 'CAS 149709-58-0' to ensure you receive accurate quotes and product information. This practice helps in comparing offers from different suppliers, avoiding potential miscommunications, and ultimately securing the right chemical for your needs. The CAS number is your most powerful tool for accurate chemical identification in the marketplace.