(+)-Tetrabenazine ((+)-TBZ; (3R,11bR)-TBZ; (3R,11bR)-Tetrabenazine) is a reversible inhibitor of vesicular monoamine transporter 2 (VMAT-2), inhibits transport by VMAT2 with 10-fold greater potency than transport by VMAT1. target: VMAT-2 In vitro: (+)-Tetrabenazine inhibit the activity of the transporter but appear to interact differently with the protein. [2] (+)-Tetrabenazine inhibits reserpine binding to the transporter, suggesting that the sites may interact in an allosteric manner. [1] In vivo: 0.9% saline (80%) and dimethylsulfoxide (DMSO) (20%). (+)-Tetrabenazine blocks dopamine (DA) storage and depletes striatal DA; (+)-Tetrabenazine was shown to induce tremulous jaw movements (TJMs) in rats and mice. The reference dose for administration is 2.0 mg/kg.[2]
| Molecular Weight | 317.42 |
| Formula | C19H27NO3 |
| CAS Number | 1026016-83-0 |
| Form | Solid |
| Solubility (25°C) | DMSO 16.67 mg/mL (ultrasonic) |
| Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
| Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
| Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
| Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
| Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
| Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
| Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
[1] Hassaan H Bashir, et al. Neurol Clin. Treatment of Tardive Dyskinesia
[4] Alfonso Fasano, et al. Expert Opin Pharmacother. Tetrabenazine
[5] Michael R Hayden, et al. Nat Rev Drug Discov. Tetrabenazine
| Related Monoamine Transporter Products |
|---|
| VMAT2-IN-2 tosylate
VMAT2-IN-2 tosylate is a potent VMAT2 inhibitor. |
| 13-Hydroxyisobakuchiol
Hydroxyisobakuchiol (Delta3,2-Hydroxylbakuchiol) is a potent monoamine transporter inhibitor. 13-Hydroxyisobakuchiol is more selective for the dopamine transporter (DAT) (IC50=0.58 μM) and norepinephrine transporter (NET) (IC50=0.69 μM) than for the serotonin transporter (SERT) (IC50=312.02 μM). |
| Tetrabenazine mesylate
Tetrabenazine (Ro 1-9569) mesylate is a reversible inhibitor of the vesicular monoamine transporter VMAT2 with the Kd value of 1.34 nM. Tetrabenazine mesylate can be used for research on diseases related to hyperactive movement disorders such as Huntington's disease. |
| Tetrabenazine Racemate
Tetrabenazine Racemate (Ro 1-9569 Racemate) is a selective and reversible inhibitor of vesicular monoamine transporter-2 (VMAT-2). (1) The reference for administration is 0.25-0.75 mg/kg IP (2) Injections of tetrabenazine into accumbens core also reduced FR5 lever pressing and increased chow intake. (3) Tetrabenazine (Racemate) reduced extracellular DA and altered DARPP-32 signaling in both substance-P- and enkephalin-containing accumbens neurons. (4) Tetrabenazine (Racemate) inhibits locomotor activity and produces hypothermia upon systemic administration in rats and mice. |
| Valbenazine tosylate
Valbenazine Tosylate (NBI-98854 tosylate) is a vesicular monoamine transporter 2 (VMAT2) inhibitor with Ki of 110-190 nM. |
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