Ac-Phe-NH2 is a non-competitive inhibitor of polyubiquitin chain elongation at Ki value of 8 ± 1.2 mM.

Batatasin I is a natural product that can be isolated from tuberous roots of Dioscorea batatas, with antifungal activity and anti-inflammatory effects.

PKM2 activator 2, with an AC50 value of 66 nM, is a pyruvate kinase M2 (PKM2) activator that demonstrates anti-tumor proliferative properties and attenuates the Warburg effect by normalizing cellular glycolytic metabolism through the activation of PKM2.