Brexpiprazole (OPC-34712) hydrochloride, an atypical orally active antipsychotic drug, is a partial agonist of human 5-HT1A and dopamine D2L receptor with Kis of 0.12 nM and 0.3 nM, respectively. Brexpiprazole hydrochloride is also a 5-HT2A receptor antagonist with a Ki of 0.47 nM. Brexpiprazole hydrochloride also shows potent antagonist activity at human noradrenergic α1B (Ki=0.17 nM) and α2C receptors (Ki=0.59 nM).

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.