What is "annonacin"

n. An acetogenin found in fruits such as the guanabana, frequent consumption of which is implicated in Parkinson's disease.

Annonacin is a neurotoxic chemical compound found in some fruits such as the paw paw (custard apple), soursop, and others from the family Annonaceae. It is a member of the class of compounds known as acetogenins.