University Libraries

ChemSpider is a free chemical structure database providing fast access to over 58 million structures, properties, and associated information.

ChemSynthesis is a freely accessible database of chemicals. It contains substances with synthesis references and physical property data, If you are looking for the prep of a particular compound, this site will return article citations

Name-Reaction.com is aimed at educating chemists on organic reactions in an interactive, dynamic and easy to understand format in order to better visualize the abstract world of chemistry and facilitate learning.

The Organic Chemistry Portal offers an overview of recent topics, interesting reactions and information on important chemicals for organic chemists.

Collects and independently annotates useful organic chemistry websites, particularly for synthetic organic chemists involved in academic or industrial research. Has links to the literature in the field of organic chemistry, to laboratory resources and techniques, to structural analysis, to synthesis planning, to nomenclature, and to scholarly communication and organizations.

Organic Reactions is a reference work that contains authoritative, critical reviews of many important synthetic reactions. It is based on the book series Organic Reactions.