website introduction：Primary professional organization for chemists and related occupations.
website introduction：Manufacturer of laboratory reagents in all fields of life sciences, including biochemistry, molecular biology, cell culture and cell biology.
website introduction：The RSC is the largest organisation in Europe for advancing the chemical sciences. Supported by a worldwide network of members and an international publishing business, its activities span education, conferences, science policy and the promotion of chemistry to the public.
website introduction：News articles, periodic tables, educational resources, newsletters, and annotated links.
website introduction：Distribution of electronic components and equipment.
website introduction：Free database of chemical structures of small organic molecules and information on their biological activities. Linked with NIH PubMed/Entrez information retrieval system.
website introduction：Produces the world's largest databases of chemical information.
website introduction：Resource for A Level chemistry students.
website introduction：Online chemistry tools, forums, unit converters, symmetry tables, periodic table and chemical constants.
website introduction：Free chemistry search engine which aggregates and indexes chemical structures and their associated information into a single searchable repository.
website introduction：An information service for the German chemistry community. It provides search engines for chemistry and various databases for chemical information.
website introduction：Archive of experimentally-determined, biological macromolecule 3-D structures from the Brookhaven National Laboratory.
website introduction：Information for current and prospective students.
website introduction：Arnold and Mabel Beckman Center for Chemical Sciences.
website introduction：Includes a searchable literature index, named reactions and protecting groups as well as a chemical database.
website introduction：Manufacturer of chemistry instrumentation for HPLC, mass spec, and thermal analysis.
website introduction：Thermochemical data for over 6000 organic and small inorganic compounds. Reaction thermochemistry data for over 9000 reactions. IR spectra for over 8700 compounds. Mass spectra for over 12,000 compounds. UV/Vis spectra for over 400 compounds. Electronic and vibrational spectra for over 4000 compounds. Constants of diatomic molecules (spectroscopic data) for over 600 compounds. Ion energetics data for over 16,000 compounds. Thermophysical property data for 33 fluids.
website introduction：Chem4Kids.com is a website that teaches the basics of chemistry to all ages. It has sections on atoms, matter, elements, the periodic table, biochemistry, and reactions.
website introduction：Publishes novel methods and significant improvements to tried-and-tested techniques in the life sciences and related area of chemistry.
website introduction：Stanford Linear Accelerator Center.
website introduction：Rich resource for students and teachers of introductory chemistry. Includes interactive course guides and tutorials, an exam survival guide, reference tables, self-grading quizzes and exams, a searchable glossary, a question and answer board, answers to over 300 frequently asked questions, and a chemical trivia quiz.
website introduction：Develops products that help isolate, grow, and analyze living cells and tissue for genomics, proteomics, drug discovery and development, oncology and immune function.
website introduction：Graduate and undergraduate programs, courses, fellowships, events, safety information and industrial recruiting.
website introduction：Revision notes and quizzes for UK KS3 science (US grades 6-9) and GCSE/AS/A2/IB/K12 level (US grades 9-12) students.
website introduction：Discussion boards for all areas of chemistry, at levels ranging from high school to graduate school and practicing chemists. Site also includes web directory, periodic table, articles, and reference tables.