* Enter chemical names such as Sulfuric acid, Ammonia, Chlorine or Sulfate ion in the text boxes.
* Enter chemical formulas like H2SO4 or NH3.
* For atomic ions use format: Na+ or Al3+. For molecular ions use format: [N3]- or [SO4]2-.
* Understands Aldehyde (generic) or Alcohol (generic).
* A narrow search finds the exact string and is case sensitive: Co & CO are distinguished, Water is found but water is not.
* The default broad search finds the contained string and is not case sensitive.
* First use a broad search to find chemical entity name or formula, then refine with a narrow search.
* When both fields are filled the set of reactions involving both entities is shown.