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  3. Nervous System Disease Models Dopamine Receptor Endogenous Metabolite
  4. Parkinson's Disease Models
  5. L-DOPA

L-DOPA  (Synonyms: Levodopa; 3,4-Dihydroxyphenylalanine)

Cat. No.: HY-N0304 Purity: 99.98%
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L-DOPA (Levodopa) is an orally active metabolic precursor of neurotransmitters dopamine. L-DOPA can cross the blood-brain barrier and is converted into dopamine in the brain. L-DOPA has anti-allodynic effects and the potential for Parkinson's disease.

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

L-DOPA Chemical Structure

L-DOPA Chemical Structure

CAS No. : 59-92-7

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1 g USD 84 In-stock
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Based on 13 publication(s) in Google Scholar

Other Forms of L-DOPA:

L-DOPA Related Antibodies

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  • Biological Activity

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  • References

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Description

L-DOPA (Levodopa) is an orally active metabolic precursor of neurotransmitters dopamine. L-DOPA can cross the blood-brain barrier and is converted into dopamine in the brain. L-DOPA has anti-allodynic effects and the potential for Parkinson's disease[1][2][3].

IC50 & Target

Human Endogenous Metabolite

 

In Vivo

L-DOPA can be used in animal modeling to construct a rat model of dyskinesia. L-DOPA (20 mg/kg; oral) reduces Rotenone-induced motor dysfunction[3].
L-DOPA (10, 30, 50, 70, and 100 mg/kg; oral) reverses tactile, cold and heat allodynia in neuropathic rat without any side effect in sprague-Dawley rats[4].In adult common marmosets (Callithrix jacchus, 2-3 years old, 270-350 g), L-DOPA (20/5 mg/kg, p.o.) shows the Tmax was 30 min in plasma and 60-90 min in extracellular fluid (ECF) of striatum. Mean Cmax was 20.3 μM in plasma and 442.9 nM in ECF of striatum, which is about 2.2% of that in plasma[6].
Induction of dyskinesia model[5]
Background
L-DOPA-induced dyskinesia results from a pulsatile stimulation of brain dopamine (DA) receptors, triggering a complex cascade of molecular and synaptic alterations within the basal ganglia[5].
Specific Mmodeling Methods
Mice: C57Bl/6 mice?•?male?• 8 weeks (period: 21 days)
Administration: 20 mg/kg?•?ip?•?once daily for 21 days
Note
(1) sustained unilateral 6-OHDA injections in the striatum before starting treatment.
(2) Injection volume is 10mL/kg body weight.


Modeling Indicators
Behavioral changes: Shows developed abnormal involuntary movements (AIMs) affecting the head, trunk and forelimb on the side contralateral to the lesion.
Correlated Product(s): Oxidopamine hydrochloride (HY-B1081)
Opposite Product(s): Oxidopamine hydrobromide (HY-B1081A)

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

Animal Model: 7-week-old C57BL/6J mice[3]
Dosage: 20 mg/kg
Administration: Orally
Result: Reduced Rotenone-induced motor dysfunction.
Animal Model: Sprague-Dawley rats (male 100-150 g)[4]
Dosage: 10, 30, 50, 70, and 100 mg/kg
Administration: Orally
Result: Reverses tactile, cold and heat allodynia in neuropathic rat without any side effect.
Clinical Trial
Molecular Weight

197.19

Formula

C9H11NO4
CAS No.
Appearance

Solid

Color

White to off-white

SMILES

N[C@@H](CC1=CC(O)=C(C=C1)O)C(O)=O
Structure Classification
Initial Source
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, stored under nitrogen

*The compound is unstable in solutions, freshly prepared is recommended.

Solvent & Solubility
In Vitro: 

0.1 M HCL : 20 mg/mL (101.43 mM; ultrasonic and warming and adjust pH to 2 with HCl and heat to 60°C)

H2O : 1 mg/mL (5.07 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 5.0713 mL 25.3563 mL 50.7125 mL
5 mM 1.0143 mL 5.0713 mL 10.1425 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. The compound is unstable in solutions, freshly prepared is recommended.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  PBS

    Solubility: 3.33 mg/mL (16.89 mM); Clear solution; Need ultrasonic and warming and heat to 60°C

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Calculation results:
Working solution concentration: mg/mL
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only.If necessary, please contact MedChemExpress (MCE).
Purity & Documentation

Purity: 99.98%

COA (246 KB) RP-HPLC (230 KB)

Handling Instructions (2659 KB)
References

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. The compound is unstable in solutions, freshly prepared is recommended.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
H2O / 0.1 M HCL 1 mM 5.0713 mL 25.3563 mL 50.7125 mL 126.7813 mL
5 mM 1.0143 mL 5.0713 mL 10.1425 mL 25.3563 mL
0.1 M HCL 10 mM 0.5071 mL 2.5356 mL 5.0713 mL 12.6781 mL
15 mM 0.3381 mL 1.6904 mL 3.3808 mL 8.4521 mL
20 mM 0.2536 mL 1.2678 mL 2.5356 mL 6.3391 mL
25 mM 0.2029 mL 1.0143 mL 2.0285 mL 5.0713 mL
30 mM 0.1690 mL 0.8452 mL 1.6904 mL 4.2260 mL
40 mM 0.1268 mL 0.6339 mL 1.2678 mL 3.1695 mL
50 mM 0.1014 mL 0.5071 mL 1.0143 mL 2.5356 mL
60 mM 0.0845 mL 0.4226 mL 0.8452 mL 2.1130 mL
80 mM 0.0634 mL 0.3170 mL 0.6339 mL 1.5848 mL
100 mM 0.0507 mL 0.2536 mL 0.5071 mL 1.2678 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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L-DOPA Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

Keywords:

L-DOPA59-92-7Levodopa 3,4-DihydroxyphenylalanineDopamine ReceptorEndogenous MetaboliteOrallyprecursorneurotransmittersdopamineblood-brainbarrieranti-allodynicParkinsonInhibitorinhibitorinhibit

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