ChemSpider is a free chemical structure database providing fast access to over 28 million structures, properties and associated information. By integrating and linking compounds from more than 400 data sources, ChemSpider enables researchers to discover the most comprehensive view of freely available chemical data from a single online search. It is owned by the Royal Society of Chemistry.
ChemSpider builds on the collected sources by adding additional properties, related information and links back to original data sources. ChemSpider offers text and structure searching to find compounds of interest and provides unique services to improve this data by curation and annotation and to integrate it with users’ applications.
ChemSpider SyntheticPages, CS|SP, extends this model to cover reactions, providing quick publication, peer review and semantic enhancement of repeatable reactions.
The IUPAC International Chemical Identifer (InChl, pronaunced INchee, is a textural identifier for chemical stubstances. The format and algorithms are none-proprietary and the software is freely availableunter the open source LGPL license. ChemSpider was acquired by the Royal Society of Chemistry in May, 2009. Prior to the acquisition by RSC, ChemSpider was controlled by a private corporation, ChemZoo Inc. The system was first launched in March 2007 in a beta release form and transitioned to release in March 2008. ChemSpider has expanded the generic support of a chemistry database to include support of the Wikipedia chemical structure collection via their WiChempedia implementation. ChemSpider SyntheticPages is a freely available interactive database of synthetic chemistry. It contains practical and reliable organic, organometallic and inorganic chemical synthesis, reactions and procedures deposited by synthetic chemists