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  SciFinder Web of Science Reaxys Science of Synthesis
Scope & Purpose SciFinder provides access to the full suite of CAS databases for advanced students and researchers. It is comprehensive. Web of Science provides access to the Science Citation Index. It is best used for searching and tracking citations and cited authors. Reaxys (Beilstein + Gmelin + Patent Chemistry) covers organic, organometallic, and inorganic compounds and their reactions, synthesis, and properties. Science of Synthesis is a highly organized collection of authored reviews covering the experimental methods of organic chemical synthesis, arranged by class of product.
Number of bibliographic records Over 28 million millions Over 4 million N/A
Number of substance records Over 60 million N/A Over 18 million N/A
Journals Covered About 9,000 currently scanned. More than 6,600 selected "source journals" across the sciences are fully indexed. About 400. Historically the Beilstein and Gmelin handbooks covered many more sources inclucing patents, and Beilstein was essentially comprehensive for organic chemistry up to 1959. N/A
Types of Literature Covered All kinds: Journals, Patents, Dissertations, Technical Reports, Conferences, selected books, etc. Journals; plus selected conference proceedings since 1990 Journals and selected patents Selected journals, books, and patents
Dates Covered CA: 1907-present; some pre-1907 records have been added. 1965-present (coverage in UT's subscription) ca.1770-present N/A
Languages Covered more than 50 primarily English primarily English and German; also French, Russian and others. N/A
Types of Searching Research topic; chemical name/synonym; chemical structure and substructure; chemical reaction; Registry Number; Author/Inventor; molecular formula; patent number; etc. Keyword; author; organization; cited reference; funding agency; grant number; publication name Chemical structure and substructure; chemical reaction; chemical name/synonym; CAS RN; MF; property data; bibliographic data Structure/reaction; keyword; author; content browsing
Chemical Structures? Yes No Yes Yes
CAS Registry Numbers? Yes No Yes for most older organic (Beilstein) compound records; newer Beilstein records and most Gmelin (inorganic) records lack RNs. No
Chemical Reactions? Yes: organic/organometallic reactions from CA since 1985, plus others drawn from various third-party sources, 1840-present. No Yes: organic reactions (Beilstein) thoroughly to 1959, selectively thereafter. Inorganic/organometallic reactions (Gmelin) selectively to present. Yes: over 265,000 representative reactions are included.
Chemical Spectra? Yes; many experimental IR, UV, NMR, MS plus millions of predicted NMR spectra from ACD Labs. No Spectral data and literature references for many compounds; no graphical spectra. No
Links to Electronic Full Text Yes, for journals and patents. Yes: find it at UT Yes Yes: find it at UT
Automatic Alerts? Yes; "Keep Me Posted" Yes Yes No
More Information SciFinder FAQ Citation Searching Reaxys Guide SoS Guide