salbutamol   Click here for help

GtoPdb Ligand ID: 558

Synonyms: albuterol | SCH-13949W | Ventolin®
Approved drug Immunopharmacology Ligand
salbutamol is an approved drug (FDA (1981))
Compound class: Synthetic organic
Comment: The approved drug salbutamol is a racemic mixture of two enantiomers: levosalbutamol ((R)-salbutamol) and (S)-salbutamol. The structure shown here does not specify stereochemistry and represents the mixture. The US FDA approved this drug with the name albuterol.
Marketed formulations may contain salbutamol sulfate (PubChem CID 9884233).
Salbutamol is termed a 'short-acting beta-agonist' (SABA).
Click here for help

Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

✖

View interactive charts of activity data across species

IUPHAR Pharmacology Education Project (PEP) logo

View more information in the IUPHAR Pharmacology Education Project: salbutamol

2D Structure
Click here for help

2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

✖
Click here for structure editor
Physico-chemical Properties
Click here for help

Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the CDK toolkit. All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

✖
Hydrogen bond acceptors 3
Hydrogen bond donors 4
Rotatable bonds 5
Topological polar surface area 72.72
Molecular weight 239.15
XLogP 1.44
No. Lipinski's rules broken 0
SMILES / InChI / InChIKey
Click here for help

SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

✖
Canonical SMILES OCc1cc(ccc1O)C(CNC(C)(C)C)O
Isomeric SMILES OCc1cc(ccc1O)C(CNC(C)(C)C)O
InChI InChI=1S/C13H21NO3/c1-13(2,3)14-7-12(17)9-4-5-11(16)10(6-9)8-15/h4-6,12,14-17H,7-8H2,1-3H3
InChI Key NDAUXUAQIAJITI-UHFFFAOYSA-N
No information available.
Summary of Clinical Use Click here for help
Highly selective β2-adrenoceptor agonist used in the treatment of COPD and asthma.
In April 2015, the FDA expanded approval to include treatment or prevention of bronchospasm in patients with reversible obstructive airway disease and for the treatment of exercise-induced bronchospasm (EIB).
A first-in-class, fixed-dose combination asthma rescue medication (delivered by a pressurised metered-dose inhaler) containing salbutamol/albuterol and budesonide (an anti-inflammatory inhaled corticosteroid), Airsupra®, was approved by the FDA in 2023.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Agonism of β2-adrenergic receptors in the lungs results in smooth muscle relaxation of bronchial smooth muscle. This is believed to be through the mechanism of increased cAMP production via adenylate cyclase activation. Increased levels of cAMP increase activity levels of protein kinase A which inhibits phosphorylation of myosin and lowers intracellular calcium concentrations leading to smooth muscle relaxation and bronchodilation. Salbutamol also inhibits the release of bronchoconstricting agents from mast cells, enhances mucociliary clearance and inhibits microvascular leakage.
External links Click here for help
For extended ADME data see the following:

Electronic Medicines Compendium (eMC)
Drugs.com