What is Aripiprazole Impurity 16 (CAS: 70500-72-0)?

Aripiprazole Impurity 16 (CAS: 70500-72-0) is a chemical compound identified as a specific byproduct or degradation product of aripiprazole, a second-generation antipsychotic medication. It is structurally related to aripiprazole but differs in molecular configuration, often arising during synthesis or storage. Its chemical formula is typically C19H25NO2, with properties such as solubility in organic solvents and a molecular weight of approximately 303.4 g/mol. This impurity is primarily of interest in pharmaceutical quality control and research for ensuring drug purity and safety.