Rotundine

Catalog No.S2437 Batch:S243703

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Technical Data

Formula

C21H25NO4
Molecular Weight 355.43 CAS No. 483-14-7
Solubility (25°C)* In vitro DMSO 71 mg/mL (199.75 mM)
Water Insoluble
Ethanol Insoluble
In vivo (Add solvents to the product individually and in order)
Clear solution
5% DMSO 95% Corn oil
1.25mg/ml Taking the 1 mL working solution as an example, add 50 μL of 25 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results. 
Clear solution
5%DMSO 40%PEG300 5%Tween80 50%ddH2O
3.85mg/ml Taking the 1 mL working solution as an example, add 50 μL of 77 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results. 
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description Rotundine (L-tetrahydropalmatine, L-THP) is a selective dopamine D1 receptor antagonist with IC50 of 166 nM.
Targets
D1 receptor [1] 5-HT1A [1] D2 receptor [1] D3 receptor [1]
166 nM 347 nM 1.47 μM 3.25 μM
In vitro

Rotundine displays a higher affinity to dopamine D1 than D2 receptor with Ki of 124 nM and 388 nM, respectively, while the IC50 values are 166 nM (D1) and 1.47 μM (D2), respectively. Rotundine exhibits a weak inhibitory activity against dopamine D3 with IC50 of 3.25 μM. Rotundine also potently inhibits 5-HT1A with IC50 of 374 nM and Ki of 340 nM. In addition to the antagonism of postsynaptic dopamine receptors, inhibition of presynaptic autoreceptors by Rotundine leads to increased dopamine release, which is probably attributed to lower affinity of Rotundine for D2 receptors. Along with dopamine receptors, Rotundine can interact with a number of other receptor types, including α-1 adrenergic receptors, at which it functions as an antagonist, and γ-aminobutyric acid receptors, at which it facilitates γ-aminobutyric acid binding through positive allosteric effects. [1]
In vivo

Rotundine treatment does not affect the locomotor activity at the doses of 6.25 mg/kg, 12.5 mg/kg, or 18.75 mg/kg, but significantly antagonizes the hyperactivity induced by oxy-codone (5 mg/kg). [2] Oral administration of Rotundine (10-25 mg/kg) significantly increases hot-plate latency of mice, indicating that Rotundine exerts remarkable analgesic activity, which is associated with β-endorphin neurons in the arcute nucleus and supraspinal D2 receptor. [3] Administration of Rotundine (1-10 mg/kg) dose-dependently increases, while 20 mg/kg decreases the rate of cocaine self-administration under fixed-ratio (FR) reinforcement, due to a postsynaptic, rather than presynaptic, DA receptor blockade mechanism. In contrast to the effects on cocaine's actions, only the 10 mg/kg dose of Rotundine but not 1 mg/kg or 3 mg/kg produces inhibitory effect on sucrose self-administration and locomotion. [4] LD50: Mice 1160mg/kg (i.g.) [5]

Protocol (from reference)

Animal Study:

[3]
  • Animal Models

    Female ICR mice subjected to hot plate latency assay

  • Dosages

    25 mg/kg

  • Administration

    Oral administration

Selleck's Rotundine has been cited by 1 publication

An antiviral drug screening system for enterovirus 71 based on an improved plaque assay: A potential high-throughput method [ J Med Virol, 2019, 91(8):1440-1447] PubMed: 30900754

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

NOT FOR HUMAN, VETERINARY DIAGNOSTIC OR THERAPEUTIC USE.