Alfa Aesar, a Johnson Matthey company, has added a molecular structure and substructure search capability, as well as a search by MDL® number option, to its website. The new structure search function allows customers to search for families of building blocks and intermediates through the use of a molecular drawing tool. The user can draw a molecule and search either by substructure, where any instance of the drawn molecule as a complete structure or as a substructure is returned as a search result, or by exact structure, where only exact matches are returned. The MDL number search allows for searches by MDL numbers, which originate from the Available Chemicals Directory.
To view and test the new structure search, visit www.alfa.com/alf/structure.html
. The MDL number search is available at www.alfa.com/alf/laboratory_chemical_suppliers.htm