Chemistry

The CAS Source Index (CASSI) Search Tool is an online resource intended to support researchers and librarians who need accurate bibliographic information.

ChemSpider is a free chemical structure database providing fast access to over 100 million structures, properties, and associated information. By integrating and linking compounds from hundreds of high-quality data sources, ChemSpider enables researchers to discover the most comprehensive view of freely available chemical data from a single online search. It is owned by the Royal Society of Chemistry.

This site publishes the latest version of the NIST Standard Reference Database which presently provides information primarily on organic compounds

An extensive but unannotated list of links to chemical industry and pharmaceutical industry professional sites maintained by Wendy Warr & Associates (a consulting firm in cheminformatics)

Searches over 40 databases and 1,950 selected websites, offering 200 million pages of authoritative U.S. government science information, including research and development results

Provides full text of seminal papers in the history of chemistry.

This web site is produced by the Skeptics Society and provides articles on a variety of topics providing scientific evidence to refute extraordinary claims and promote scientific analysis of the natural world.

One of the Research Information Databases created and maintained by the National Institute of Advanced Industrial Science and Technology (Japan). Compounds can be searched using compound name, molecular formula, molecular weight, CAS Registry number, or SDBS number and any of six spectra can be specified.

Provides access to tutorials and virtual labs relating to inorganic chemistry, maintained by Oxford University.

This site provides an online version of the periodic table of elements with easy to use navigation features that allow users to get additional information about elements.