Provides online access to several databases, including Chemical Abstracts, Registry, CASREACT, CHEMLIST, CHEMCAT, and MEDLINE. They provide access to CAplus, a database of chemical literature and U.S. and foreign chemical-related patents, CASREACT, and the Registry database from Chemical Abstracts Service.
Esp@cenet is especially good for classification searching. Contains European patents, World patents, and patent applications. Ability to search patents by origin country (i.e. CN for China). Downloadable and printable in PDF.