Skip to main content

SciFinder: Explore Substances and Reactions

Searching by Name or Formula

Search for a Substance by Name

To search for a substance by name, select Explore Substances, then pick Substance Identifier on the left-hand column. Substances can be searched for by name, brand name, or CAS Registry Number. Enter one substance per line.


Search for a Substance by Formula

To search for a substance by formula, select Explore Substances, then pick Molecular Formula on the left-hand column. Enter one formula per line.

Searching by Chemical Structure

SciFinder Scholar allows users to search for substances and reactions in two major ways: drawing a structure in the structure editor or typing in a structure name/formula.  To search by chemical structure, select Explore Substances or Explore Reactions at the top of the page:


Search by Drawing a Structure

On the Chemical Structure tab, click on the Structure Editor. The most common drawing tools are located on the bottom toolbar: atoms (1), bonds (2), rings (3), and stereochemistry (4).

By typing any atom or molecule into the text box on the toolbar, the next bond drawn will connect to that. You can also click on the end of a bond to add that atom/molecule.

For more complex structures, select the Templates button on the left toolbar. From there, browse the structure categories and select one to paste into the structure editor.

Return to Top


Search for a Product or Reactant

To search for a structure in a certain reaction role--i.e. the synthesis of aspirin--either open the reaction editor within Explore Reactions or select the Reaction option under Drawing Editor: in the open structure editor. Several new icons will appear on the left toolbar.

After drawing the structure, select the Reaction Role icon on the left-hand toolbar. Select the structure, then choose the reaction role to search for.

Return to Top