Molvizarin is a

cytotoxic Cytotoxicity is the quality of being toxic to cells. Examples of toxic agents are an immune cell or some types of venom, e.g. from the puff adder (''Bitis arietans'') or brown recluse spider (''Loxosceles reclusa''). Cell physiology Treating c ...

acetogenin derivate with the molecular formula C₃₅H₆₂O₇ which has been isolated from the bark of the plant '' Annona cherimolia''. Molvizarin has ''

in vitro ''In vitro'' (meaning in glass, or ''in the glass'') studies are performed with microorganisms, cells, or biological molecules outside their normal biological context. Colloquially called " test-tube experiments", these studies in biology a ...

'' activity against tumor cells.

References

Polyketides Lactones {{organic-compound-stub