Chemistry: Chemistry Websites

Search by chemical name, molecular formula or weight, or CAS number to find information on chemicals. This resource is free but requires you to create an account.

Produced by the Royal Society of Chemistry, ChemSpider is "a free chemical structure database providing fast text and structure search access to over 28 million structures from hundreds of data sources."

Provides access to journal articles, a number of databases, career and conference information, a bookstore, and more. (Membership is required to access some of these, but it is free to become a member. Some databases do have added costs.)

Excellent resource for first semester chemistry students or those needing a refresher. Site includes a compound library, construction kits, calculators, simulators, and tutorials.

A division of the ACS, the mission of the Green Chemistry Institute "is to advance the implementation of green chemistry principles into all aspects of the chemical enterprise."

Defines chemical nomenclature, terminology, symbols, units, and more.

Contains information on and links to chemistry journals, a chemistry overview, periodic tables and databases, chemical and biochemical databases, chemistry tutorials, and more.

This "webbook" contains 27 chapters and thermochemical data for more than 7,000 organic and small inorganic compounds, data for 8,000 thermochemical reactions and ion energetics data for more than 16,000 compounds. It also includes IR spectra for more than 16,000 compounds, mass spectra for more than 15,000 compounds, and UV/VIS spectra for some 16,000 compounds.

The Chemistry page of the National Institute of Standards and Technology, the virtual library links to databases, bibliographies, NIST data, organizations, and chemistry related webistes.

An excellent resource which has organized organic chemistry web sites by categories, such as literature, synthesis planning, reaction components, structural analysis and more.

Reverse chemical look up. Enter the information you have (melting point, boiling point, molecular formula, mass spectral peaks, etc) and receive a list of possible organic compounds.

A database built by the Syracuse Research Corporation, this database contains chemical structures, names and physical properties for over 25,250 chemicals.

Directory of chemistry. Search for your term or browse by topic

From molecules to physiology, PLoS Pathogens publishes important new ideas on bacteria, fungi, parasites, prions and viruses that contribute to our understanding of the biology of pathogens and pathogen-host interactions.

The Public Library of Science (PLoS) is a nonprofit organization of scientists and physicians committed to making the world's scientific and medical literature a public resource.

Search national and international scientific databases and portals for articles and multimedia.