ChemSpider Blog

If you noticed performance issues in the past couple of days with ChemSpider we apologize. Unfortunately we were getting hit pretty hard by a university in Europe with over 400,000 hits made on the search page. This definitely had an impact on the performance of our web services and the general search performance. We’ve blocked the user now and are hoping for no repeats of the situation (though we have already had similar issues from other countries). If you are the person(s) who were trying to gather the data from our site please contact us directly at infoATchemspiderDOTcom and we can talk about what you are trying to achieve and whether we can help.

In the past 48 hours we have added six new depositors datasets to ChemSpider. Details of all of our data sources are listed here. The list of six new depositors and the number of compounds in each collection is given below. Click on the hyperlinks for more information. The number of compounds link will display the compound collection and the link to the title of the compound collection will list some details about the data source provider.