Dictionary of Natural Products –  a comprehensive structure database of natural products. Continually reviewed to keep pace with the current literature, this database is the most comprehensive source of natural product information available. 

CHEMnetBASE – a collection of 9 cutting edge interactive chemistry databases that provide instant access to authoritative content. Institutions and corporations can subscribe to databases individually, or the CHEMnetBASE as a whole.

POLYMERS – Provides scientific and commercial information on over 1,100 polymers in a single, first-stop reference. An invaluable resource to anyone involved in polymer science and technology this database provides a single, first-stop reference. Each entry includes trade names, properties, constituent monomers, commercial applications, manufacturing processes, and references.