In the intricate world of chemical commerce and research, precise identification is paramount. This is where the Chemical Abstracts Service (CAS) Registry Number, or CAS number, plays an indispensable role. Each unique chemical substance is assigned a distinct CAS number, serving as a universal identifier that eliminates ambiguity. For B2B procurement professionals and scientists, understanding the significance of CAS numbers is fundamental to efficient and accurate sourcing, especially for specialized compounds like pharmaceutical intermediates. Let's explore this with 3,20-Bis(ethylenedioxy)-19-norpregna-5(10)9(11)dien-17-ol (CAS 54201-84-2).

What is a CAS Number?

A CAS number is a unique numerical identifier assigned to a specific chemical substance by the Chemical Abstracts Service, a division of the American Chemical Society. It consists of three parts, separated by hyphens, with the last digit serving as a checksum. The format is typically XXXX-XX-X, but can also be longer. For example, 3,20-Bis(ethylenedioxy)-19-norpregna-5(10)9(11)dien-17-ol is unequivocally identified by its CAS number: 54201-84-2.

Why CAS Numbers are Crucial for Procurement

When you need to buy 3,20-Bis(ethylenedioxy)-19-norpregna-5(10)9(11)dien-17-ol, using its CAS number in your search query ensures you are looking for the correct substance. This is vital because many chemicals share similar names or synonyms, which can lead to confusion. For instance, the numerous synonyms listed for this compound, such as 'Ulipristal Impurity 13' or '17-Hydroxy-19-norpregna-5(10),9(11)-diene-3,20-dione cyclic bis(1,2-ethanediyl acetal)', all refer to the same chemical entity that is identified by 54201-84-2.

Benefits of using CAS numbers in procurement:

  • Accuracy: Eliminates guesswork and ensures you are ordering the exact chemical intended.
  • Efficiency: Streamlines searching and communication with suppliers.
  • Global Standard: Universally recognized, facilitating international trade and collaboration.
  • Regulatory Compliance: Essential for safety data sheets (SDS), labeling, and customs declarations.

When sourcing pharmaceutical intermediates, referencing the CAS number on quotes and purchase orders is a best practice. This is especially true when dealing with complex molecules where variations in structure can drastically alter properties and applications.

Ensuring Quality with CAS Identification

A reputable supplier of API intermediates for sale will always provide the correct CAS number with their product specifications. When inquiring about 402.52376 molecular weight chemical procurement, always confirm the CAS number. Suppliers like NINGBO INNO PHARMCHEM CO.,LTD. emphasize the use of correct CAS numbers in all transactions, ensuring clarity and precision. This commitment helps researchers and procurement teams to trust the identity and quality of the chemicals they procure, thereby supporting successful R&D and manufacturing outcomes.

In essence, the CAS number is an indispensable tool for anyone involved in the chemical supply chain, guaranteeing accuracy and facilitating seamless transactions.