Tetrabenazine-d 7 (TBZ-d 7 -d 7 ) is deuterium labeled Tetrabenazine. Tetrabenazine (Ro 1-9569) is a reversible inhibitor of the vesicular monoamine transporter VMAT2 with the K d value of 1.34 nM. Tetrabenazine can be used for research on diseases related to hyperactive movement disorders such as Huntington's disease.