Databases
Search for information on chemical structures of small organic molecules and information on their biological activities. This is an open access database.
Online Resources
Also see the Getting Started section of this guide.
Books
Online Resources
Databases
Online Resources
1,2-Ethanediamine OR 107-15-3 OR C2H8N2
Example: The amino acid ALANINE has two registry numbers: 302-72-7 and 56-41-7
CAS REGISTRY® is an authoritative collection of chemical substance information, covering substances identified from the scientific literature from 1957–present, with additional substances going back to the early 1900s. CAS REGISTRY is updated daily with thousands of new substances.
A CAS Registry Number® (CAS RN®) is a unique numeric identifier that designates one particular chemical substance. Since chemical compounds can be described in many different ways (such as molecular formulas, structure diagrams, systematic names, proprietary or trade names, etc.), a CAS Registry Number allows for quick and reliable validation, is internationally recognized, and most importantly, is unique to each chemical substance.
Searching for literature by the CAS RN is a great way to avoid issues related to vast chemical synonyms and chemical name syntax issues when searching in databases.
Examples of searching by CAS RN in databases: