Brexpiprazole sulfoxide (Crude) is a sulfur-oxidized metabolite derived from the parent antipsychotic drug, featuring an oxidized thiazole ring with a sulfoxide (S=O) functionality at the 1,3-dithiolane core. This impurity retains the piperazine and dibenzothiazepine moieties characteristic of Brexpiprazole but exhibits altered redox properties due to the sulfoxide substitution. It arises via oxidative degradation pathways under acidic or thermal stress conditions. This compound serves as a critical reference standard for HPLC-based impurity profiling in Brexpiprazole drug substance analysis.
On RequestC1CN(CCN1CCCCOC2=CC3=C(C=C2)C=CC(=O)N3)C4=C5C=CS(=O)C5=CC=C4
InChI=1S/C25H27N3O3S/c29-25-9-7-19-6-8-20(18-22(19)26-25)31-16-2-1-11-27-12-14-28(15-13-27)23-4-3-5-24-21(23)10-17-32(24)30/h3-10,17-18H,1-2,11-16H2,(H,26,29)
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