What are the sources you use to create ChemIDplus and how often is it updated?
As the online chemical identification (ChemIDplus) file of the NLM, the core sources of substance records correspond to those substances that are cited in one or more of the NLM databases. NLM databases include MEDLINE/PubMed, MeSH, AIDSdrugs, and the TOXNET databases. Other sources include the Canadian Domestic Substances List (DSL), European EINECS, EPA TSCA Inventory, the SUPERLIST set of regulatory resources, and other internet databases such as EPA Substance Registry System, IARC, NIAID, and NIST Chemistry Webbook. There are over 70 chemical resources monitored in ChemIDplus. The ChemIDplus database is updated continuously.
