Reaxys
Reaxys is a paid online database that is the successor to Crossfire, which was discontinued in late 2010. With this system the databases Beilstein , Gmelin and Patent Chemistry can be queried. In contrast to Crossfire, it is based on a Windows-based web interface with a simplified query language and the queries are carried out simultaneously across all three databases. The work package contains a synthesis planner, the query options, especially in the area of structure research , have been expanded, filter functions have been refined and a similarity search has been integrated. The database can be used with all common browsers. The provider is the Elsevier publishing house .