1. GPCR/G Protein
    Neuronal Signaling
  2. 5-HT Receptor
    Dopamine Receptor
  3. Rotundine

Rotundine (Synonyms: (-)-Tetrahydropalmatine; L-Tetrahydropalmatine)

Cat. No.: HY-N0096 Purity: 99.88%
Handling Instructions

Rotundine is an antagonist of dopamine D1, D2 and D3 receptors with IC50s of 166 nM, 1.4 μM and 3.3 μM, respectively. Rotundine is also an antagonist of 5-HT1A with an IC50 of 370 nM.

For research use only. We do not sell to patients.

Rotundine Chemical Structure

Rotundine Chemical Structure

CAS No. : 483-14-7

Size Price Stock Quantity
10 mM * 1 mL in DMSO USD 66 In-stock
Estimated Time of Arrival: December 31
50 mg USD 60 In-stock
Estimated Time of Arrival: December 31
100 mg   Get quote  
200 mg   Get quote  

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Customer Review

Based on 1 publication(s) in Google Scholar

Other Forms of Rotundine:

Top Publications Citing Use of Products
  • Biological Activity

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Rotundine is an antagonist of dopamine D1, D2 and D3 receptors with IC50s of 166 nM, 1.4 μM and 3.3 μM, respectively. Rotundine is also an antagonist of 5-HT1A with an IC50 of 370 nM.

IC50 & Target

IC50: 166 nM (D1 receptor), 1.4 μM (D2 receptor), 3.3 μM (D3 receptor), 370 nM (5-HT1A)[1]

In Vivo

It is reported that Rotundine (l-THP) possesses a blocking effect on dopamine D1 and D2 receptors and can inhibit physical dependence in morphine dependent mice and significantly reduce the development of the conditional place preference induced by morphine in mice. On day 1 and 7, there is no difference in locomotor counts between the Rotundine groups (6.25, 12.5, and 18.75 mg/kg) and saline group [F(3, 37)=1.360, P>0.05, F(3, 37)=0.348, P>0.05, respectively]. Locomotor counts are greatly increased in the oxycodone group compare with the saline group. Rotundine at doses of 6.25, 12.5, and 18.75 mg/kg antagonizes hyperactivity induced by oxycodone [F(4, 60)=15.76, P<0.01]. Rotundine (6.25, 12.5 mg/kg) does not affect the magnitude of sensitization, but there is a marked difference between oxycodone+oxycodone group and Rotundine (18.75 mg/kg)+oxycodone+oxycodone group, indicating that Rotundine (18.75 mg/kg) greatly inhibits the development of oxycodone sensitization [F(4, 62)=8.766, P<0.01][2].

Clinical Trial
Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : ≥ 100 mg/mL (281.35 mM)

H2O : < 0.1 mg/mL (insoluble)

*"≥" means soluble, but saturation unknown.

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.8135 mL 14.0675 mL 28.1349 mL
5 mM 0.5627 mL 2.8135 mL 5.6270 mL
10 mM 0.2813 mL 1.4067 mL 2.8135 mL
*Please refer to the solubility information to select the appropriate solvent.
Animal Administration

Kunming mice, initially weighing 18 to 22 g are used in this study. Four groups of mice are given Rotundine (l-THP) (6.25, 12.5, and 18.75 mg/kg) or saline, respectively, once per day for 7 consecutive days, followed by a 5 d withdrawal period. On d 13, all animals are challenged with saline. On day 1, 7, and 13, after 40-min treatment with Rotundine or saline, the mice are put into the test boxes and locomotor activity is monitored for 60 min[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight







COC1=CC=C2C(CN3CCC4=CC(OC)=C(OC)C=C4[[email protected]]3([H])C2)=C1OC


Room temperature in continental US; may vary elsewhere

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Cat. No.: HY-N0096