Reaxys (previously: Crossfire Beilstein)

Reaxys is a web-based search and retrieval system for chemical compounds, bibliographic data and chemical reactions. It is built to support chemists in their daily work with focused and relevant information in chemistry. Reaxys has extensive coverage of quality, authoritative information in organic, inorganic and organometallic chemistry. Expert chemists carefully select journals and patents so that only high-quality, experimental data are included in Reaxys.