Report:SureChem/Data Coverage/Non Patent Coverage/Indexing and Value Added Content

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Indexing and Value Added Content

SureChem tags each record with chemical structure data using a machine algorithm. This data allows the user to search the collections by SMILES code, chemical name, or keyword and identify all records that contain the desired information. This is a standardization process that produces more hits than databases which use a thesaurus to tag records such as INSPEC and Compendex. For example, records in SureChem that contain the word "aspirin," or any of its synonyms, have been tagged with the SMILES string for aspirin, CC(=O)Oc1ccccc1C(=O)O. The term "aspirin" then becomes standardized with synonyms such as “acetylsalicyclic acid”, and the IUPAC chemical name for the drug. As a result of this standardization, searches on any of these terms will bring up the same set of records, eliminating the need to search multiple keywords and the possibility of missing references which use obscure chemical synonyms. Synonyms are derived from various sources including Open Access chemical databases, with a high preference for using manually curated sources. [1]

SureChem tags are created by an automated parsing tool. Since tags are created, users are able to search through documents for those keywords via a navigation tool. For more information on how SureChem tags records with structural chemical data, see ”What is a chemical search” on the FreePatentsOnline site and the SureChem Help page.

editors note iconEditor's Note:

The chemical structure tagging is the meat of the functionality of SureChem. This tagging means that the system automatically synonym searches, which is extremely important in chemical structure searching since there is so much variation on how to describe the exact same chemical compound.

One disadvantage of using machine tagging is that errors are likely to occur at some small percentage. It should also be noted that CAS Registry Numbers, the popular chemical searching annotation, cannot be searched with SureChem and Markush searching is also not possible. When typed into the "named search" portion, however, some CAS Registry Numbers yield a number of appropriate search results.

These quibbles aside, the included chemical structure tagging makes SureChem very powerful, useful, and user friendly at the same time.


  1. SureChem Pro FAQ. SureChem website, Accessed on April 30, 2009.
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