Pendulone could be a valuable chemopreventive agent, it shows strong inhibition on the effect of the cell cycle induced by TPA and shows potent anti-tumor-promoting activity for an in vivo two-stage carcinogenesis test.

Pimonidazole hydrochloride accumulates in hypoxic cells via covalent binding with macromolecules or by forming reductive metabolites after the reduction of its nitro group.

HHS-0701 is a sulfur-triazole exchange (SuTEx) ligand. HHS-0701 is a potent inhibitor of tyrosine-reactive prostaglandin reductase 2 (PTGR2).