A poisonous compound found in the seeds, bark, and leaves of the sugar apple (cherimoya) tree.
The chemical components of atis seed include alkaloids such as anonaine and liriodenine, as well as other compounds like flavonoids and tannins. These components contribute to the potential health benefits and medicinal properties of atis seeds.
The seeds of the Atis plant (aka Sugar Apple, Annona squamosa), contain the alkaloid anonaine, which is toxic -- this is why powdered seeds, and heat-extracted oil from the seeds, are used in various regions as insecticide. See the link below for details.