Telekin, a eudesmane-type sesquiterpene lactone compound isolated from Chinese folk medicine Carpesium divaricatum, has been reported to strongly inhibit the proliferation of cancer cells

pGlu-Pro-Arg-MNA monoacetate is a thrombin substrate which has been modeled after a thrombin cleavage site in human fibrinogen, can be used for a sensitive assay of antithrombin III activity.

L-Selenocystine can be used as a building block in biologically active selenol compounds.