CAS Number LookupSearch our catalog of 92,000+ chemicals by CAS Registry Number. Find product details, molecular formula, and request a quote instantly. What is a CAS Number?A CAS Registry Number (CAS RN) is a unique numerical identifier assigned by the Chemical Abstracts Service to every chemical substance described in the open literature. CAS numbers are the universal standard for identifying chemicals, used by researchers, regulators, and suppliers worldwide. CAS Number FormatCAS numbers follow the pattern XXXXXXX-YY-Z, where the first part can be 2–7 digits, the middle part is always 2 digits, and the final digit is a check digit. Examples:
Why Use CAS Numbers?Chemical names can vary by language, nomenclature system, or convention. A single compound may have dozens of common names, trade names, and systematic names. The CAS number provides a single, unambiguous identifier that eliminates confusion when ordering chemicals for research or industrial applications. Buy Chemicals by CAS NumberChemUniverse carries over 92,000 chemicals available for purchase. Simply enter a CAS number above to find the product in our catalog, view specifications (purity, molecular weight, formula), and request a quote. We serve researchers, universities, and industrial laboratories across the United States and internationally. |