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Research Guide for Chemistry: Web resources

A guide to research resources for Chemistry

Oxford Research Archive (ORA)

Oxford University Research Archive (ORA) is the institutional repository for the University of Oxford and is home to the scholarly output of its research members. It holds publications, theses and research data.

Google Scholar

Google Scholar is a search engine that provides a broad search of scholarly literature. It covers multiple disciplines and sources.

Using Google Scholar off campus

To get full-text links in your Google Scholar results, you must first tell Google Scholar that you have access to the University of Oxford library subscriptions by

  • Selecting Settings from the top of the Google Scholar Home Page
  • Selecting Library Links
  • Searching for University of Oxford and selecting it from the list
  • Saving your settings

You will now see 'Find it @ Oxford' links next to items in your Google Scholar results that you can use to access the full-text provided by library subscriptions.

Finding Open Access material

Journals and Books

Browser extensions

Downloadable ‘apps’ for your internet browsers.

CAS Registry Numbers

What is a CAS Registry Number?

CAS Registry Numbers are unique identifiers assigned to specific substances by the Chemical Abstracts Service (CAS), department of the American Chemical Society. For example the CAS RN for aspirin is  50-78-2.

CAS Numbers are useful for substance searching in chemistry databases. A single search by CAS RN retrieves results for chemical names, synonyms, trade names, systematic names of the same substance. 

How do I find the CAS Registry Number?

If you know the chemical name you can find its CAS Number by searching in the following databases

NIST Chemistry WebBook

RSC ChemSpider

Contact your subject librarian if you need help in finding a CAS number, or substance searching.


Repositories, e-print servers, archives...

Data repositories