Characteristics, Biological Activities, Synthesis, and Methods for the Determination of Brexpiprazole in Different Matrices

Background Brexpiprazole (BRZ) is a "third-generation" antipsychotic dopaminergic (D-2) and 5HT(1A) (serotonin) partial agonist, approved in July 2015 by the US Food and Drug Administration for the treatment of the major depressive disorder (MDD) other than schizophrenia in adults. Antipsychotics are known to produce extrapyramidal effects as side effects. The recent development in this segment is of piperazine-based antipsychotic BRZ, which is more specific towards indented indications (depression) and has fewer side effects. Objective To critically review the different analytical methods available in the literature. Methods Eight spectrophotometry-based studies, nineteen chromatography-based studies, and two other method-based studies were found in the literature search. A brief discussion on pharmacokinetics and the mechanism of action is also included. Conclusion This review can be used for the development of more robust and suitable analytical methods for the determination of drugs in different matrices. A brief discussion concerning the approach towards the advancement of green analytical methods is likewise one of the points of this review.