This database allows users to search the NLM ChemIDplus database of over 370,000 chemicals. A user may enter compound identifiers such as Chemical Name, CAS Registry Number, Molecular Formula, Classification Code, Locator Code, and Structure or Substructure. New searchable features include search and display by Toxicity indicators such as Median Lethal Dose (LD50), by Physical/Chemical Properties such as LogP, and by Molecular Weight.
You will need a web browser that has a recent version of Java installed. There is a structure drawing and display applet named Marvin. An alternative method to provide the capabilities needed to accept a structure query is the Chime plug-in.
September 13, 2010