Allows users to search structure and nomenclature authority files used for the identification of over 370,000 chemical substances. You may enter compound identifiers such as Chemical Name, CAS Registry Number, Molecular Formula, Classification Code, Locator Code, and Structure or Substructure. 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. Structure searching and direct links to many biomedical resources for chemicals of interest are also available. If you do not need to perform structure searching, consider ChemIDPlus Lite to search by Name or CAS Registry Number.
Both versions of ChemIDplus are available through TOXNET.