Chemistry

Open source wiki started by Gary Wiggins, author of Chemical Information Sources. Includes Selected Internet Resources for Chemistry and (SirCh) and information on the publication process.

Search structure and nomenclature information for chemical substances and 368,000 chemical structures. Hosted by National Library of Medicine.

Interactive periodic table which contains elemental information and lengthy descriptions.

ChemSpider is a free chemical structure database providing fast text and structure search access to over 100 million structures from hundreds of data sources.

eMolecules empowers researchers to explore uncharted chemical and biological spaces and deliver more efficient drug-discovery programs.

Search for data based on name, chemical formula, CAS registry number, molecular weight, chemical structure, or selected ion energetics and spectral properties.

Periodic Table Live! allows you to explore a broad range of information about the elements, their reactions, their properties, their structures, and their histories.

Chemical structures of small organic molecules and information on their biological activities.

The American Chemical Society, founded in 1876 and the world's largest scientific society.

The American Association for Clinical Chemistry AACC is an international society comprised of medical professionals with an interest in clinical chemistry, clinical laboratory science, and laboratory medicine.

AIChE is the world's leading organization for chemical engineering professionals.