Catalog No.S4009 Synonyms: YM 178

Mirabegron Chemical Structure

Molecular Weight(MW): 396.51

Mirabegron is a selective β3-adrenoceptor agonist with EC50 of 22.4 nM.

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In DMSO USD 430 In stock
USD 270 In stock
USD 997 In stock
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Biological Activity

Description Mirabegron is a selective β3-adrenoceptor agonist with EC50 of 22.4 nM.
β3-adrenoceptor [1]
22.4 nM(EC50)
In vitro

Mirabegron concentration-dependently increases the accumulation of cAMP in CHO cells expressing human 3-adrenoceptors (ARs) with I.A. of 0.8. Mirabegron has little agonistic effect on 1- and 2-ARs. Mirabegron concentration-dependently relaxes rat and Human bladder smooth muscle strips precontracted with 10-6 M or 10-7 M carbachol with EC50 values of 5.1 μM and 0.78 μM, respectively. The maximal relaxant effects of Mirabegron are 94.0 % and 89.4% that of carbachol, respectively. [1] Mirabegron is a time-dependent inhibitor of CYP2D6 in the presence of NADPH as the IC50 value in human liver microsomes decreased from 13 to 4.3 μM after 30 min preincubation. Mirabegron acts partly as an irreversible or quasi-irreversible metabolism-dependent inhibitor of CYP2D6. [2]

In vivo Mirabegron produces a dose-dependent decrease in the frequency of rhythmic bladder contraction in anesthetized rats. 3 mg/kg i.v. Mirabegron suppresses the frequency to 2 counts/10 min. Mirabegron does not decrease the amplitude of rhythmic bladder contraction. [1] Mirabegron decreases primary bladder afferent activity and bladder microcontractions in rats. Mirabegron (0.3 and 1 mg/kg) inhibits mechanosensitive single-unit afferent activities (SAAs) of Aδ fibers in response to bladder filling. SAAs of C-fibers decrease only at 1 mg/kg Mirabegron treatment. Mirabegron administration suppresses the mean bladder pressure and the number of microcontractions during an isovolumetric condition of the bladder. [3] Mirabegron is efficient on facilitation of bladder storage. Mirabegron dose-dependently decreases the resting intravesical pressure. Mirabegron dose dependently decreases the frequency of nonvoiding contractions, considered an index of abnormal response in bladder storage. Mirabegron exhibits no significant effects on the amplitude of nonvoiding contractions, micturition pressure, threshold pressure, voided volume, residual volume, or bladder capacity. [4]


Solubility (25°C)

In vitro DMSO 79 mg/mL (199.23 mM)
Ethanol 8 mg/mL (20.17 mM)
Water Insoluble
In vivo Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+ddH2O
For best results, use promptly after mixing.

* 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.

Chemical Information

Molecular Weight 396.51


CAS No. 223673-61-8
Storage powder
in solvent
Synonyms YM 178

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Clinical Trial Information

NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT03612401 Enrolling by invitation Drug: Mirabegron Spinal Cord Injuries|Neurogenic Bladder|Cognitive Change The University of Texas Health Science Center at San Antonio December 5 2018 Early Phase 1
NCT02751931 Completed Drug: Mirabegron Neurogenic Detrusor Overactivity Astellas Pharma Europe B.V.|Astellas Pharma Inc June 17 2016 Phase 3
NCT02526979 Completed Drug: mirabegron Overactive Bladder|Neurogenic Detrusor Overactivity Astellas Pharma Europe B.V.|Astellas Pharma Inc December 17 2015 Phase 1
NCT02095665 Unknown status Drug: Mirabegron|Drug: Tamsulosin|Drug: Tylenol #3 Nephrolithiasis Nova Scotia Health Authority November 2014 Phase 4
NCT02211846 Completed Drug: Mirabegron Neurogenic Detrusor Overactivity|Overactive Bladder|Pharmacokinetics of Mirabegron Astellas Pharma Inc|Astellas Pharma Europe B.V. September 21 2014 Phase 1

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Adrenergic Receptor Signaling Pathway Map

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