1. GPCR/G Protein
    Neuronal Signaling
    Metabolic Enzyme/Protease
  2. Adrenergic Receptor
    Endogenous Metabolite
  3. Phenylephrine hydrochloride

Phenylephrine hydrochloride (Synonyms: (R)-(-)-Phenylephrine hydrochloride; L-Phenylephrine hydrochloride)

Cat. No.: HY-B0471 Purity: 99.95%
Handling Instructions

(R)-(-)-Phenylephrine hydrochloride is a selective α1-adrenoceptor agonist with pKis of 5.86, 4.87 and 4.70 for α1D, α1B and α1A receptors respectively.

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

Phenylephrine hydrochloride Chemical Structure

Phenylephrine hydrochloride Chemical Structure

CAS No. : 61-76-7

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10 mM * 1  mL in DMSO USD 66 In-stock
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Based on 1 publication(s) in Google Scholar

Other Forms of Phenylephrine hydrochloride:

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(R)-(-)-Phenylephrine hydrochloride is a selective α1-adrenoceptor agonist with pKis of 5.86, 4.87 and 4.70 for α1D, α1B and α1A receptors respectively.

IC50 & Target

Human Endogenous Metabolite


In Vitro

(R)-(-)-Phenylephrine is a selective α1-adrenoceptor agonist with pKi values of 5.86, 4.87 and 4.70 for α1D, α1B and α1A receptors respectively[1][2]. Phenylephrine promotes cardiac fibroblast proliferation. Phenylephrine activates CaN and evokes NFAT3 nuclear translocation. It suggests that the Ca(2+)/CaN/NFAT pathway mediates phenylephrine -induced cardiac fibroblast proliferation, and this pathway might be a possible therapeutic target in cardiac fibrosis[3].

In Vivo

Perfusion of hearts with 100 μM phenylephrine causes a rapid (maximal at 10 min) 12-fold activation of two p38-MAPK isoforms. α1-adrenoceptor agonists such as phenylephrine increase the contractility of the heart. Phenylephrine also activates SAPKs/JNKs in neonatal ventricular myocytes[4]. Phenylephrine could increase the alveolar fluid clearance in high tidal volume-ventilated rats and accelerate the absorption of pulmonary edema[5].

Clinical Trial
Molecular Weight







OC1=CC([[email protected]@H](O)CNC)=CC=C1.Cl


Room temperature in continental US; may vary elsewhere.


4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Solvent & Solubility
In Vitro: 

DMSO : ≥ 150 mg/mL (736.49 mM)

H2O : 50 mg/mL (245.50 mM; Need ultrasonic)

*"≥" means soluble, but saturation unknown.

Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 4.9099 mL 24.5495 mL 49.0990 mL
5 mM 0.9820 mL 4.9099 mL 9.8198 mL
10 mM 0.4910 mL 2.4550 mL 4.9099 mL
*Please refer to the solubility information to select the appropriate solvent.
Animal Administration

Rat: A total of 170 male Wistar rats are randomLy allocated into 17 groups (n=10) using random number tables. Short-term (40 minutes) mechanical ventilation with high tidal volume is performed to induce lung injury, impair active Na+ transport and lung liquid clearance in the rats. Unventilated rats serves as controls. To demonstrate the effect of phenylephrine on alveolar fluid clearance, phenylephrine at different concentrations (10, 1, 0.1, 0.01, and 0.001 μM) is injected into the alveolar space of the HVT ventilated rats[5].

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

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Phenylephrine(R)-(-)-PhenylephrineL-PhenylephrineAdrenergic ReceptorEndogenous MetaboliteBeta ReceptorInhibitorinhibitorinhibit

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