3-(3-Chloropropanamido)phenyl 3-Chloropropanoate is an impurity of Aripiprazole (129722-12-9 #CAS), which is an agonist at the dopamine autoreceptor and an antagonist at the postsynaptic D2 receptor (1,2,3,4). Aripiprazole is an antipsychotic and a potential drug candidate for treating psychoses such as schizophrenia.