There will be scheduled maintenance work beginning on Saturday 15th June 2019 at 8:30 am through to Sunday 16th June 2019 at 11:30 pm (BST).

During this time our website may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.

Searching ChemSpider

We hope that finding information on ChemSpider will be an intuitive and easy experience. But we know that there are many features in the site and it isn’t always immediately obvious what they can do. These pages will show you how to use the the basic search features of the site and progress on to answering difficult questions and understanding how to get the best out of ChemSpider’s tools.

Simple searches

Find out about the different ways of using a name or other identifier in a search Searching using names or identifiers (Basics)

Structure and Advanced searching

Don’t have a name to start searching with? learn how to input and search on a structure, or other kinds of specialist searches:

Please email us at for advice, guidance, bug reports, and new feature requests.