Science of Synthesis [via Thieme]

Science of Synthesis provides an authoritative review of synthetic methods from the early 1800s to the present, for the field of organic and organometallic chemistry. Science of Synthesis is full-text, structure, and reaction searchable. The database also provides links to the primary literature and to related information in the Houben-Weyl ...

REAXYS

REAXYS provides property, structure and reaction data for millions of chemical substances (organic, inorganic and organometallic) and chemical reactions.  Up to hundreds of fields of chemical and physical property information are available.  Reaxys combines the Beilstein Handbook of Organic Chemistry, the Gmelin Handbook of Inorganic and Organometallic Chemistry and the ...