In the complex world of chemical procurement, precision and clarity are paramount. Misidentification of a chemical compound can lead to significant project delays, wasted resources, and even safety hazards. This is where the Chemical Abstracts Service (CAS) Registry Number plays an indispensable role. A CAS number is a unique numerical identifier assigned to every chemical substance described in the open scientific literature. For professionals in R&D, procurement, and quality control, understanding and utilizing CAS numbers is a fundamental skill.

Each CAS number consists of three parts separated by hyphens, with the last digit serving as a check digit. For instance, 4H-pyrido[4,3-b][1,4]oxazin-3-one is assigned the CAS number 102226-40-4. This unique identifier ensures that there is no ambiguity about the specific chemical compound being referenced, regardless of its common name, synonyms, or variations in nomenclature across different regions or languages. When you are searching for a specific product, such as a CAS 102226-40-4 pharmaceutical intermediate, using this number in your search queries will yield the most accurate results.

For procurement managers, using CAS numbers is critical when requesting quotes or placing orders. It eliminates the possibility of confusion with similar-sounding or identically named compounds. For example, when you intend to buy 4H-pyrido[4,3-b][1,4]oxazin-3-one, specifying 'CAS 102226-40-4' ensures that the supplier understands precisely which chemical you require. This is especially important when dealing with international suppliers who may have different naming conventions. Companies like NINGBO INNO PHARMCHEM CO.,LTD., a prominent manufacturer of fine chemicals, rely on CAS numbers for precise order processing.

Furthermore, CAS numbers are essential for accessing safety data sheets (SDS) and regulatory information. Each CAS number is linked to a wealth of data, including physical and chemical properties, hazard statements, and handling precautions. This information is vital for risk assessment and ensuring compliance with safety regulations. When you inquire about the price for 2H,3H,4H-pyrido[4,3-b][1,4]oxazin-3-one, you can also request its SDS, usually referencing the CAS number.

The global network of chemical suppliers, including many experienced manufacturers in China, uses CAS numbers as a standard identifier. This standardization facilitates cross-border trade and collaboration among researchers and industries worldwide. Therefore, always ensure that you include the correct CAS number in your inquiries and purchase orders to guarantee you receive the exact chemical you need, with the quality and specifications you expect. It's a simple yet powerful tool that underpins efficient and safe chemical commerce.