RÖMPP Online Information on chemistry (mainly food chemistry and natural substances), biology, genetics and the environment
CRC Handbook of Chemistry and Physics Annually updated tables with substance properties and mathematical and physical formulas
SciFinder Bibliographical data on >10,000 journals, information on substances and patented information
Reaxys Database for chemical structures, compound properties and reactions. Comprises the former Beilstein and Gmelin Handbooks, journal articles, books, reviews, patents etc. Access to associated supplier databases (eMolecules, LabNetwork, Sigma-Aldrich)