List is sorted by PR
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Tweets (*)
pr *
4.4
(si*)
>20
8
  • ChemSpider
  • www.chemspider.com
  • Free chemistry search engine which aggregates and indexes chemical structures and their associated information into a single searchable repository.
4.5
(si*)
-
8
  • PubChem
  • pubchem.ncbi.nlm.nih.gov
  • Free database of chemical structures of small organic molecules and information on their biological activities. Linked with NIH PubMed/Entrez information retrieval system.
4.5
(si*)
>80
7
  • CHEMnetBASE
  • chemnetbase.com
  • Online access to major chemical reference works from Chapman and Hall/CRC including Combined Chemical Dictionary (CCD), The Handbook of Chemistry and Physics, Polymers: A Property Database, Properties of Organic Compounds.
3.8
(si*)
<5
7
  • Synthetic Pages
  • www.syntheticpages.org
  • Free interactive database of practical and reliable organic, organometallic and inorganic chemical syntheses submitted by synthetic chemists.
4.0
(si*)
-
7
  • Molecular Structure Center
  • www.iumsc.indiana.edu
  • Small molecule database of structures that have primarily been determined using single crystal X-ray diffraction. Features JAVA applets that can be used to orient and examine the molecule, and a dedicated Beowulf computer system to generate high quality rendered images. Currently contains over 2,500 molecules.
3.9
(si*)
-
6
  • Reciprocal Net
  • www.reciprocalnet.org
  • Distributed database used by research crystallographers to store information about 3D molecular structures.
3.7
(si*)
-
6
  • ChemExpo
  • www.chemexpo.com
  • News, stock reports, products, directories, classifieds, and profiles of commercially available chemical products; focus reports;
3.8
(si*)
-
6
4.1
(si*)
-
6
3.9
(si*)
-
6
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