American Chemical Society
ACS Homepage is the online gateway to American Chemical Society resources, products, and services for members, chemists, scientists, chemical industry professionals, educators, students, children and science enthusiasts.
http://www.chemistry.org

Chemistry & Structures & 3D Molecules
This web site highlights areas of the chemical world and illustrates the structures behind the words. It also provides background information about the science of the chemicals.
http://www.3dchem.com

Chemistry Central
Chemistry Central is an independent publishing platform operated by BioMed Central committed to providing immediate open access to peer-reviewed chemical research.
http://www.chemistrycentral.com

Chemistry Conferences
A comprehensive, fully searchable database of worldwide conferences, exhibitions and trade fairs. A free online submission form allows chemical organizations to publish their events free of charge.
http://www.chemistry-conferences.com

Chemistry Web Reviews
The Chemistry Web Reviews are a collection of pages written by the University of Oxford undergraduate students. They summarize their own exploration of the information which is available online to help their learning and understanding of chemistry.
http://professor.chem.ox.ac.uk/firstyearcomputing/webreviews.asp

Chemistry World
Chemistry World is packed with articles on all aspects of the chemical sciences, regular company and individual profiles, job vacancies, commercial technology reports and many fascinating features.
http://www.rsc.org/chemistryworld/

Chemsoc
Chemsoc - the chemistry societies' electronic network contains business and science news, a comprehensive worldwide conference and events database, careers advice and job vacancies, useful links and a unique multi-site index feature allowing you to search other sites without leaving chemsoc.
http://www.chemsoc.org

ChemWeb
This unique resource combines a huge range of information for those in research chemistry, the chemicals industries and related disciplines. Membership is completely free.
http://www.chemweb.com/

International Union of Pure and Applied Chemistry
The official website of the International Union of Pure and Applied Chemistry (IUPAC). The IUPAC serves to advance the worldwide aspects of the chemical sciences and to contribute to the application of chemistry in the service of Mankind. As a scientific, international, non-governmental and objective body, IUPAC can address many global issues involving the chemical sciences.
http://www.iupac.org

Reactive Reports Chemistry WebMagazine
Reactive Reports is an informative web-based chemistry magazine hosted by Advanced Chemistry Development. It provides the chemistry community with cutting edge reports of exciting developments in the world of the chemical sciences and related fields.
http://www.reactivereports.com

Royal Society of Chemistry
The RSC is the largest organization in Europe for advancing the chemical sciences. Supported by a worldwide network of members and an international publishing business, our activities span education, conferences, science policy and the promotion of chemistry to the public.
http://www.rsc.org

Solvent Database
The nonprofit National Center for Manufacturing Sciences (NCMS) offers an online solvent database called SOLV-DB. Users can choose to browse by eight categories: solvent name, chemical abstracts, sax number, chemical number, chemical formula, property category, matching range, and solvent synonym. Once presented, queries provide a list of physical properties such as specific gravity and boiling point, as well as links to regulatory data, environmental fate data, and health and safety data. The main page contains a how-to link that gives additional user information for this already well - designed and user-friendly resource.
http://solvdb.ncms.org/

Substance Registry System
Providing information to over 70,000 chemicals and how they are represented in the Environmental Protection Agency (EPA) regulations and data systems this database can be searched by name, chemical abstracts service (CAS) number, or keyword/identifier.
http://www.epa.gov/srs/

The Nobel Prize in Chemistry
This is the official online source where you first learn the names of the new Nobel Prize Winners in Chemistry in October each year. Within seconds after the announcements are made by the Prize-Awarding Institutions, press releases about the prizes are made available.
http://nobelprize.org/nobel_prizes/chemistry/

The Orbitron
A gallery of orbitals on the WWW, including ray-traced images representing orbitals, and animations of wave functions and electron density plots.
http://winter.group.shef.ac.uk/orbitron/