These resources provide powerful structure based searching interfaces for reaction discovery and synthesis planning. For comprehensive reaction searching, you may need to search each of these databases, as well as consulting online handbooks of reaction information and print reference works on synthetic methods.
Links to download software for drawing chemical structures. Resulting structures can be saved in a variety of formats for use in structure searchable databases, word processing documents, etc.
The University of Chicago Library has a license to ChemDraw basic software. This PDF contains instructions for downloading the software.
Other options for chemical drawing tools:
Links will take you to the catalog record which has call number and location information.