Petunidin-3-O-arabinoside chloride is an anthocyanin with antioxidant activity that can be isolated from blueberry (Vaccinium Spp.) puree.

Biotin-Dynorphin A (1-17)

KL-50 is a selective toxin toward tumors that lack the DNA repair protein O6-methylguanine-DNA-methyltransferase (MGMT), which reverses the formation of O6-alkylguanine lesions. KL-50 activates DNA damage response pathways and cycle arrest in MGMT-cells, independent of mismatch repair (MMR). KL-50 is promising for research of brain tumors that lack the DNA repair protein MGMT.