Lookup by supplier code. Vendor purchasing codes can be looked up one at a time or up to 1000 at a time to find SMILES and ZINC ID rapidly (Figure ). This is a useful tool to ask whether particular molecules from a particular vendor are included in ZINC-22. Molecules that are found may be loaded into the shopping cart. Lookup by supplier codes uses the Sb database (see Methods). To use lookup by ZINC code, the user browses to cartblanche22.docking.org and then selects Lookup > by Supplier code from the popup menu. This process repeats for the desired number of molecules. The random generator can also pull random molecules within a subset. In this case, distribution is generated for that subset (e.g lead-like) and molecules will be picked from the respective tranches.