Search the Metabolomics Workbench

Search the Metabolomics Workbench RefMet database by metabolite name, synonym, mass, formula, InChIKey or PubChem compound ID,
the Metabolomics Workbench Metabolite database by metabolite name and the NMDR by metabolite name, project or study title.
Perform a regular expression search on metabolite names by using a 'grep:' prefix.

RefMet is the standardized nomenclature used by the NMDR for both discrete metabolite structures and partially defined metabolite species identified in metabolomics experiments (~95,000 entries)
The Metabolite Database is a database of structures and annotations of biologically relevant metabolites collected from various public sources (~80,000 entries). It includes the discrete metabolite structures contained in RefMet but not the partially defined species.