β-dihydrotetrabenazine

(2R,3S,11bS)-9,10-dimethoxy-3-(2-methylpropyl)-1H,2H,3H,4H,6H,7H,11bH-pyrido[2,1-a]isoquinolin-2-ol is an impurity of Tetrabenazine, which is a VMAT inhibitor used in the treatment of hyperkinetic movement disorder.

Trans (2,3)-Dihydrotetrabenazine is a Tetrabenazine metabolite, shows inhibition activity on vesicular monoamine transporter (VMAT2).

Tetrabenazine Metabolite ((-)-β-HTBZ), a vesicles monoamine transporter 2 (VMAT2) inhibitor, is an active metabolite of Tetrabenazine. Tetrabenazine Metabolite has a high affinity for VMAT2 with a Ki of 13.4 nM. Tetrabenazine Metabolite is often used to study chorea associated with Huntington's disease and other hyperactivity disorders.