Organic Chemistry Projects: Finding Information About Your Compound

After You've Checked Wikipedia

More sources--journal articles, books, encyclopedias and websites if you need additional information about your compounds, beyond what's cited in the Wikipedia article.

Kirk-Othmer Encyclopedia of Chemical Technology
Comprehensive chemical encyclopedia covering all aspects of chemistry and chemical engineering. Good complement to Ullmann's. Articles are updated and added quarterly, so check the article's publication date.
Ullmann's Encyclopedia of Industrial Chemistry
Another one of our core reference works for chemistry, Ullmann's is similar to Kirk-Othmer. You'll find articles about organic compounds (including food and health/beauty products). This encyclopedia is regularly updated, so check the publication date for the specific article to make sure it's recent enough to be of use.

Merck Index
Database of 11,000+ chemicals, drugs, and biologicals of some significance, with basic physical properties, applications, bioactivity data, and key literature references. To access, use the "log in via home institution" option at the website.
PubChem
The world's largest collection of freely available chemical information, with more than 122+ million compounds (compiled from 300+ million substance records). The records include physical properties, spectra, safety and toxicity information, drug information, and more. There are more than 1,000 data sources contributing to PubChem, primarily chemical vendors, research and development organizations, and government agencies.