1. www.reaxys.com(accessed March 14,2014). Reaxys, Reaxys Medicinal Chemistry and the Reaxys trademark are owned and protected by Reed Elsevier Properties SA and used under license.
2. Richter, F. How Beilstein Is Made.J. Chem. Educ.1938,15, 310 (http://pubs.acs.org/doi/pdf/10.1021/ed015p310).
3. CrossFire is a trademark of Elsevier Information Systems GmbH.
4. The Semantic Web (also called Web 3.0) is a term first introduced by Berners-Lee, Hendler and Lassila in a Scientific American article to describe an expected evolution of the World Wide Web (The Semantic Web - Scientific Americanhttp://www.scientificamerican.com/article/the-semantic-web/(accessed December 18,2013). The World Wide Web Consortium (W3C;www.w3.org/standards/semanticweb/) now spearheads a collaborative movement that aims to transform the internet into a “web of data” where connections between data carry meaning (semantic content) that can be processed by machines.