Gateways and directories of internet sources
Collections and directories of chemistry related websites including universities, societies, research organisations, electronic journals, newsgroups and mailing lists.
Chemdex
The original Sheffield ChemDex founded in 1993.
ChemFinder
Chemical search engine. Enter a chemical name, CAS number, molecular weight, or molecular formula and find Web sites that include that chemical. Results are sorted by physical properties, biochemistry, health, regulations, and Material Safety Data Sheets (MSDS).
Chemsoc (Chemistry Societies Network)
Various national chemistry societies contributing to a single site.
Internet Chemist
A tutorial on Internet skills for chemists that includes a tour of key chemistry websites.
PSIgate Physical Sciences Information Gateway
Links to quality internet resources in the physical sciences selected by experts and aimed at the learning, teaching and research community.
Rolf Claessen's Chemistry Index
Scirus
Elsevier Science web search engine designed for the research scientist. Scirus searches the whole web including access-controlled sites such as ScienceDirect and ChemWeb.