ChemSpider
From Intellogist
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ChemSpider has indexed chemical structures by "reading" images in patents and other documents throughout the web. It then "tags" the chemical structure data with a number of chemical identifiers and chemical properties. ChemSpider relies on both open access sources (such as regulatory lists, for example) and closed for-profit commercial sources for the data it indexes. One of its partners for patent content is the SureChem database. A list of all sources that allow ChemSpider to index their chemical data is available at http://www.chemspider.com/datasources.aspx.
ChemSpider provides free chemical structure and even sub-structure searches, as well as searches by other identifiers such as IUPAC chemical name, SMILES codes, and InChI codes. For sequence searching, the program relies on the NCBI Blast search algorithm.
Because ChemSpider relies on automated data-gathering, and collects both highly-curated and lower-quality data, the search is not the most reliable source of chemical information, but as a free service to the public, it is still a valuable resource.
After being acquired by the Royal Society of Chemistry (RSC), ChemSpider planned to re-launch its search engine at the American Chemical Society's 2009 Annual Meeting.[1]
Sources
- ↑ "ChemSpider re-launching search engine for chemists." AltSearchEngines blog. Posted August 14th, 2009. http://www.altsearchengines.com/2009/08/14/chemspider-re-launching-search-engine-for-chemists/. Accessed on August 14, 2009.
