Dihydrotetrabenazine
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3D model (JSmol)  | 
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CompTox Dashboard (EPA)  | 
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| Properties | |
| C19H29NO3 | |
| Molar mass | 319.445 g·mol−1 | 
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 
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Dihydrotetrabenazine or DTBZ is an organic compound with the chemical formula C19H29NO3. It is a close analog of tetrabenazine. DTBZ and its derivatives, when labeled with positron emitting isotopes such as carbon-11 and fluorine-18, are used as PET radioligands for examining VMAT2.