In the intricate world of chemical procurement and research, precise identification of substances is fundamental. The Chemical Abstracts Service (CAS) registry system assigns a unique numerical identifier, known as a CAS number, to every chemical substance described in the literature. These numbers are critical for clarity, accuracy, and efficiency in global chemical commerce and scientific research. Let's explore the significance of CAS numbers, using 2-Bromo-5-methylpyridin-4-amine (CAS: 79055-60-0) as a case study.

What is a CAS Number?

A CAS number is a unique string of digits, separated by hyphens, that identifies a specific chemical substance. For example, 2-Bromo-5-methylpyridin-4-amine is universally identified by the CAS number 79055-60-0. This system was developed by the American Chemical Society's Chemical Abstracts Service and is used worldwide by chemists, researchers, regulatory bodies, and suppliers.

The CAS registry system is comprehensive and includes organic compounds, inorganic compounds, polymers, alloys, and more. Each CAS number refers to a single, clearly defined chemical substance, preventing ambiguity that can arise from multiple common names, trade names, or synonyms.

Why CAS Numbers are Essential for Sourcing

For procurement professionals and laboratory scientists, using CAS numbers is indispensable for several reasons:

1. Unambiguous Identification: When you search for a chemical like '2-Bromo-5-methylpyridin-4-amine,' there might be slight variations in nomenclature or synonyms. However, the CAS number 79055-60-0 will consistently and unambiguously pinpoint the exact compound you need.

2. Global Standardization: CAS numbers provide a standardized language for chemicals, facilitating international trade and regulatory compliance. When you specify 'CAS 79055-60-0' in an inquiry, suppliers worldwide understand precisely which material you are requesting.

3. Efficient Searching: Online chemical databases, supplier catalogs, and scientific literature often allow users to search directly by CAS number. This is far more efficient and reliable than searching by name, especially for less common or complex compounds.

4. Safety and Regulatory Information: CAS numbers are often linked to crucial safety data sheets (SDS), hazard information, and regulatory status. This connection is vital for ensuring safe handling and compliance.

Navigating Suppliers with CAS Numbers

When sourcing intermediates, such as 2-Bromo-5-methylpyridin-4-amine, always include the CAS number in your search queries and purchase orders. For example, searching for 'buy CAS 79055-60-0' or '2-Bromo-5-methylpyridin-4-amine manufacturer China CAS 79055-60-0' will direct you to suppliers who are accurately listing their products. Reputable suppliers, such as NINGBO INNO PHARMCHEM CO.,LTD., will prominently feature CAS numbers on their product listings and documentation.

In essence, the CAS number is your most reliable tool for ensuring you are ordering and receiving the correct chemical substance. It bridges language barriers and provides a universally recognized identifier, making your procurement process more efficient, accurate, and safe.