Cat. No.: HY-B0623

Ropinirole

(Synonyms: SKF 101468)

4 Cited Publications

Customer Review

Based on 4 publication(s) in Google Scholar

Ropinirole (SKF 101468) is an orally active, potent D₃/D₂ receptor agonist with a K_i of 29 nM for D₂ receptor. Ropinirole has pEC₅₀s of 7.4, 8.4 and 6.8 for hD₂, hD₃ and hD₄ receptors, respectively. Ropinirole has no affinity for the D₁ receptors. Ropinirole has the potential for Parkinson's disease.

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

Purity: 99.42%
CAS No.: 91374-21-9
Formula: C₁₆H₂₄N₂O
Molecular Weight:260.37

Storage:

Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month

Ropinirole Chemical Structure

CAS No.: 91374-21-9

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Fluorescent Dye

Strong Fluorescence Signal / Multi-Disciplinary Applications / High Fluorescence Specificity

Biological Activity
- Description
- IC₅₀ & Target
- Cellular Effect
- In Vitro
- In Vivo
- Clinical Trial
Chemical Information
Publications (4)
Solvent & Solubility
- In Vitro
Purity & Documentation
References
Help & FAQs
Classifications
Bioz

Biological Activity

Description

IC₅₀ & Target^[1]^[2]

D₂ Receptor

29 nM (Ki)

hD₂ Receptor

7.4 (pEC₅₀)

hD₃ Receptor

8.4 (pEC₅₀)

hD_4.4 Receptor

6.8 (pEC₅₀)

All Dopamine Receptor Isoforms :

Cellular Effect

Cell Line	Type	Value	Description	References
AtT20	EC₅₀	19.2 nM Compound: ropinirole	Agonist activity at human dopamine D3 receptor expressed in mouse AtT-20 cells assessed as stimulation of [35S]GTPgamma binding Agonist activity at human dopamine D3 receptor expressed in mouse AtT-20 cells assessed as stimulation of [35S]GTPgamma binding	[PMID: 20038106]
CHO	EC₅₀	10.3 nM Compound: ropinirole	Agonist activity at human dopamine D3 receptor expressed in CHO cells by [35S]GTPgammaS binding assay Agonist activity at human dopamine D3 receptor expressed in CHO cells by [35S]GTPgammaS binding assay	[PMID: 20146482]
CHO	EC₅₀	10.3 nM Compound: Ropinirole	Agonist activity at human dopamine D3 receptor expressed in CHO cells assessed as stimulation of [35S]GTPgammaS binding Agonist activity at human dopamine D3 receptor expressed in CHO cells assessed as stimulation of [35S]GTPgammaS binding	[PMID: 20605099]
CHO	EC₅₀	304 nM Compound: ropinirole	Agonist activity at human dopamine D2 receptor expressed in CHO cells by [35S]GTPgammaS binding assay Agonist activity at human dopamine D2 receptor expressed in CHO cells by [35S]GTPgammaS binding assay	[PMID: 20146482]
CHO	EC₅₀	304 nM Compound: Ropinirole	Agonist activity at human dopamine D2L receptor expressed in CHO cell membranes incubated for 1 hr by [35S]GTPgammaS binding assay Agonist activity at human dopamine D2L receptor expressed in CHO cell membranes incubated for 1 hr by [35S]GTPgammaS binding assay	[PMID: 25490054]
CHO	EC₅₀	304 nM Compound: ropinirole	Agonist activity at human dopamine D2L receptor expressed in CHO cells assessed as stimulation of [35S]GTPgamma binding Agonist activity at human dopamine D2L receptor expressed in CHO cells assessed as stimulation of [35S]GTPgamma binding	[PMID: 20038106]
CHO	EC₅₀	304 nM Compound: Ropinirole	Agonist activity at human dopamine D2 receptor expressed in CHO cells assessed as stimulation of [35S]GTPgammaS binding Agonist activity at human dopamine D2 receptor expressed in CHO cells assessed as stimulation of [35S]GTPgammaS binding	[PMID: 20605099]
CHO	EC₅₀	4 nM Compound: ropinerole	Agonist activity at human recombinant dopamine D3 receptor expressed in CHO cells assessed as inhibition of forskolin-stimulated cAMP accumulation Agonist activity at human recombinant dopamine D3 receptor expressed in CHO cells assessed as inhibition of forskolin-stimulated cAMP accumulation	[PMID: 17976986]
COS-7	EC₅₀	3.89 nM Compound: Ropinirole	Agonist activity at Rattus norvegicus (rat) dopamine D2/D3 receptor transfected in african green monkey COS7 cells assessed as inhibition of forskolin-stimulated adenylyl cyclase activity after 10 min Agonist activity at Rattus norvegicus (rat) dopamine D2/D3 receptor transfected in african green monkey COS7 cells assessed as inhibition of forskolin-stimulated adenylyl cyclase activity after 10 min	10.1007/s00044-004-0006-x
COS-7	EC₅₀	75.5 nM Compound: Ropinirole	Agonist activity at Rattus norvegicus (rat) dopamine D2 receptor transfected in african green monkey COS7 cells assessed as inhibition of forskolin-stimulated adenylyl cyclase activity after 10 min Agonist activity at Rattus norvegicus (rat) dopamine D2 receptor transfected in african green monkey COS7 cells assessed as inhibition of forskolin-stimulated adenylyl cyclase activity after 10 min	10.1007/s00044-004-0006-x
COS-7	IC₅₀	107 nM Compound: Ropinirole	Displacement of [3H]nemonapride from Rattus norvegicus (rat) wild type dopamine D3 receptor transfected in african green monkey COS7 cells after 1 hr by beta scintillation counting Displacement of [3H]nemonapride from Rattus norvegicus (rat) wild type dopamine D3 receptor transfected in african green monkey COS7 cells after 1 hr by beta scintillation counting	10.1007/s00044-004-0006-x
COS-7	IC₅₀	1803 nM Compound: Ropinirole	Displacement of [3H]nemonapride from Rattus norvegicus (rat) wild type dopamine D2 receptor transfected in african green monkey COS7 cells after 1 hr by beta scintillation counting Displacement of [3H]nemonapride from Rattus norvegicus (rat) wild type dopamine D2 receptor transfected in african green monkey COS7 cells after 1 hr by beta scintillation counting	10.1007/s00044-004-0006-x
COS-7	IC₅₀	56.1 nM Compound: Ropinirole	Displacement of [3H]nemonapride from Rattus norvegicus (rat) chimeric dopamine D3 trunk/D2 tail receptor transfected in african green monkey COS7 cells after 1 hr by beta scintillation counting Displacement of [3H]nemonapride from Rattus norvegicus (rat) chimeric dopamine D3 trunk/D2 tail receptor transfected in african green monkey COS7 cells after 1 hr by beta scintillation counting	10.1007/s00044-004-0006-x
COS-7	IC₅₀	985 nM Compound: Ropinirole	Displacement of [3H]nemonapride from Rattus norvegicus (rat) chimeric dopamine D2 trunk/D3 tail receptor transfected in african green monkey COS7 cells after 1 hr by beta scintillation counting Displacement of [3H]nemonapride from Rattus norvegicus (rat) chimeric dopamine D2 trunk/D3 tail receptor transfected in african green monkey COS7 cells after 1 hr by beta scintillation counting	10.1007/s00044-004-0006-x
HEK293	EC₅₀	330 nM Compound: 2	Agonist activity at human D2SR expressed in HEK293 cell membranes co-expressing PTX insensitive variant of Galphao1 incubated for 30 mins by [35S]GTP-gammaS binding assay Agonist activity at human D2SR expressed in HEK293 cell membranes co-expressing PTX insensitive variant of Galphao1 incubated for 30 mins by [35S]GTP-gammaS binding assay	[PMID: 28870802]
HEK293	EC₅₀	89 nM Compound: 2	Agonist activity at human D2SR expressed in HEK293 cells incubated for 5 hrs by beta-Arrestin 2 recruitment assay Agonist activity at human D2SR expressed in HEK293 cells incubated for 5 hrs by beta-Arrestin 2 recruitment assay	[PMID: 28870802]
HEK-293T	EC₅₀	30 nM Compound: Ropinirole	Partial agonist activity at human D2SR expressed in HEK293T cells co-expressing (EA)beta-arrestin2 and GRK2 assessed as induction of beta-arrestin2 recruitment after 5 hrs by chemiluminescence assay Partial agonist activity at human D2SR expressed in HEK293T cells co-expressing (EA)beta-arrestin2 and GRK2 assessed as induction of beta-arrestin2 recruitment after 5 hrs by chemiluminescence assay	[PMID: 28489379]
HEK-293T	EC₅₀	330 nM Compound: Ropinirole	Agonist activity at human D2S receptor expressed in HEK293T cell membranes coexpressing Galphao1 assessed as induction of nucleotide exchange preincubated for 30 mins followed by addition of [35S]GTPgammaS measured after 30 mins by [35S]GTPgammaS binding Agonist activity at human D2S receptor expressed in HEK293T cell membranes coexpressing Galphao1 assessed as induction of nucleotide exchange preincubated for 30 mins followed by addition of [35S]GTPgammaS measured after 30 mins by [35S]GTPgammaS binding	[PMID: 28489379]
HEK-293T	EC₅₀	89 nM Compound: Ropinirole	Partial agonist activity at human D2SR expressed in HEK293T cells co-expressing (EA)beta-arrestin2 assessed as induction of beta-arrestin2 recruitment after 5 hrs by chemiluminescence assay Partial agonist activity at human D2SR expressed in HEK293T cells co-expressing (EA)beta-arrestin2 assessed as induction of beta-arrestin2 recruitment after 5 hrs by chemiluminescence assay	[PMID: 28489379]
Pituitary gland cell	EC₅₀	83 nM Compound: ropinerole	Agonist activity at human recombinant dopamine D2 receptor expressed in rat pituitary cells assessed as inhibition of forskolin-stimulated cAMP accumulation Agonist activity at human recombinant dopamine D2 receptor expressed in rat pituitary cells assessed as inhibition of forskolin-stimulated cAMP accumulation	[PMID: 17976986]

In Vitro

Ropinirole has affinity for D₃ receptors of 10-20 fold higher than the D₂ and D₄ receptors. Ropinirole is weakly active at alpha 2-adrenoceptors and 5-HT₂ receptors but inactive at 5-HT₁, benzodiazepine and gamma-aminobutyric acid receptors or alpha 1 and beta-adrenoceptors^[1]^[2].

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

In Vivo

Ropinirole (0.1-10 mg/kg; i.p.) decreases intracranial self-stimulation (ICSS) thresholds and induces anxiolytic- and antidepressive-like effects without affecting motor activity or spatial memory^[2].

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

Clinical Trial

NCT Number	Sponsor	Condition	Start Date	Phase A549
NCT01329991	Plexxikon\|		2011-05	PHASE1

Chemical Information

CAS No. 91374-21-9
Appearance Solid
Molecular Weight 260.37
Formula C₁₆H₂₄N₂O
Color Pale purple to light pink
SMILES

O=C1NC2=C(C(CCN(CCC)CCC)=CC=C2)C1
Synonyms

SKF 101468
Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

Publications (4)

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Adv Sci (Weinh)

Nigra-Subthalamic Dopaminergic Circuitry Modulates and Represents Distinct Pain Modality in Physiological and Pain States in Mice. [Abstract]

2026 Jul;13(37):e19913. PMID: 41944312
Acta Pharmacol Sin

Dysfunction of subthalamic dopaminergic circuitry contributes to anxiety- and depression-like behaviors in 6-OHDA lesion-induced hemiparkinsonian mice. [Abstract]

2025 May 6. PMID: 40329003
Front Cell Dev Biol

Chlorpromazine affects autophagy in association with altered Rag GTPase-mTORC1-TFEB signaling. [Abstract]

2023 Sep 8:11:1266198. PMID: 37745295
J Neurosci

Acute Ongoing Nociception Delays Recovery of Consciousness from Sevoflurane Anesthesia via a Midbrain Circuit. [Abstract]

2024 Aug 21;44(34):e0740242024. PMID: 39019613

Solvent & Solubility

In Vitro:

DMSO : 50 mg/mL (192.03 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

View the Complete Stock Solution Preparation Table

Preparing Stock Solutions

View the Complete Stock Solution Preparation Table

Concentration Solvent Mass

1 mg

5 mg

10 mg

Concentration

Solvent

Mass

1 mM

3.8407 mL

19.2034 mL

38.4069 mL

5 mM

0.7681 mL

3.8407 mL

7.6814 mL

10 mM

0.3841 mL

1.9203 mL

3.8407 mL

Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.

Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Molarity Calculator

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

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Dilution Calculator

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Purity & Documentation

Select Batch:

Purity: 99.98%

Assay: 99.98%

ee.: 99.98%

Data Sheet (272 KB)
SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Korean - KR (393 KB)
- Portuguese - PT (393 KB)
COA (2659 KB)
Elemental Analysis Report (2659 KB)
HNMR (2659 KB)
CNMR (2659 KB)
RP-HPLC (2659 KB)
NP-HPLC (2659 KB)
MS (2659 KB)
LCMS (2659 KB)
IR (2659 KB)
GC (2659 KB)
OR (2659 KB)
SDS-PAGE (2659 KB)
SEC-HPLC (2659 KB)
Other Report (2659 KB)
Handling Instructions (2659 KB)

References

[1]. Eden, R.J., et al., Preclinical pharmacology of ropinirole (SK&F 101468-A) a novel dopamine D2 agonist. Pharmacol Biochem Behav, 1991. 38(1): p. 147-54. [Content Brief]

[2]. Mavrikaki M, et al. Ropinirole regulates emotionality and neuronal activity markers in the limbic forebrain. Int J Neuropsychopharmacol. 2014 Dec;17(12):1981-93. [Content Brief]

Help & FAQs

How should lyophilized recombinant proteins be reconstituted and stored?

1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss.

Complete Stock Solution Preparation Table

Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent	Concentration Solvent Mass	1 mg	5 mg	10 mg	25 mg
DMSO	1 mM	3.8407 mL	19.2034 mL	38.4069 mL	96.0172 mL
	5 mM	0.7681 mL	3.8407 mL	7.6814 mL	19.2034 mL
	10 mM	0.3841 mL	1.9203 mL	3.8407 mL	9.6017 mL
	15 mM	0.2560 mL	1.2802 mL	2.5605 mL	6.4011 mL
	20 mM	0.1920 mL	0.9602 mL	1.9203 mL	4.8009 mL
	25 mM	0.1536 mL	0.7681 mL	1.5363 mL	3.8407 mL
	30 mM	0.1280 mL	0.6401 mL	1.2802 mL	3.2006 mL
	40 mM	0.0960 mL	0.4801 mL	0.9602 mL	2.4004 mL
	50 mM	0.0768 mL	0.3841 mL	0.7681 mL	1.9203 mL
	60 mM	0.0640 mL	0.3201 mL	0.6401 mL	1.6003 mL
	80 mM	0.0480 mL	0.2400 mL	0.4801 mL	1.2002 mL
	100 mM	0.0384 mL	0.1920 mL	0.3841 mL	0.9602 mL

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Ropinirole

Orally Active Compound Library

Neurotransmitter Receptor Compound Library

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Anti-Parkinson's Disease Compound Library

Neurodegenerative Disease-related Compound Library

Rare Diseases Drug Library

Antidepressant Compound Library

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Membrane Protein-targeted Compound Library

Membrane Receptor-targeted Compound Library

Dopamine Receptor Compound Library

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Neuronal Signaling Compound Library

FDA-Approved Drug Library

CNS-Penetrant Compound Library

Drug Repurposing Compound Library

Publications Citing Use of MedChemExpress (MCE) Ropinirole

All Dopamine Receptor Isoforms

Biological Activity

Chemical Information

Publications (4)

Solvent & Solubility

Purity & Documentation

References

Help & FAQs

Complete Stock Solution Preparation Table

Ropinirole

Orally Active Compound Library

Neurotransmitter Receptor Compound Library

FDA Approved & Pharmacopeial Drug Library

Anti-Parkinson's Disease Compound Library

Neurodegenerative Disease-related Compound Library

Rare Diseases Drug Library

Antidepressant Compound Library

Human Metabolite Library

Off-patent Drug Library

Membrane Protein-targeted Compound Library

Membrane Receptor-targeted Compound Library

Dopamine Receptor Compound Library

Multi-Target Compound Library

Bioactive Compound Library Max

MCE Bioactive Compound Library

Drug Repurposing Compound Library Plus

FDA-Approved Drug Library Plus

FDA-Approved Drug Library Mini

Bioactive Compound Library

High-Throughput Bioactive Compound Library

Mass Spectrometry Human Metabolite Library

Nephrotoxicity Compound Library

Lactylation Compound Library

GPCR/G Protein Compound Library

Neuronal Signaling Compound Library

FDA-Approved Drug Library

CNS-Penetrant Compound Library

Drug Repurposing Compound Library

Publications Citing Use of MedChemExpress (MCE) Ropinirole

All Dopamine Receptor Isoforms

Biological Activity

Chemical Information

Publications (4)

Solvent & Solubility

Purity & Documentation

References

Help & FAQs

Complete Stock Solution Preparation Table

Ropinirole Related Classifications

HY-B0623 Related Classifications