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Product Details:

  • Product Name: Salbutamol
  • CAS #: 18559-94-9
  • Mode of Action:

    Salbutamol is a beta(2)-adrenergic agonist and thus it stimulates beta(2)-adrenergic receptors. Binding of albuterol to beta(2)-receptors in the lungs results in relaxation of bronchial smooth muscles. It is believed that salbutamol increases cAMP production by activating adenylate cyclase, and the actions of salbutamol are mediated by cAMP. Increased intracellular cyclic AMP increases the activity of cAMP-dependent protein kinase A, which inhibits the phosphorylation of myosin and lowers intracellular calcium concentrations. A lowered intracellular calcium concentration leads to a smooth muscle relaxation and bronchodilation. In addition to bronchodilation, salbutamol inhibits the release of bronchoconstricting agents from mast cells, inhibits microvascular leakage, and enhances mucociliary clearance.

  • Pharmacodynamics:

    Salbutamol (INN) or albuterol (USAN), a moderately selective beta(2)-receptor agonist similar in structure to terbutaline, is widely used as a bronchodilator to manage asthma and other chronic obstructive airway diseases. The R-isomer, levalbuterol, is responsible for bronchodilation while the S-isomer increases bronchial reactivity. The R-enantiomer is sold in its pure form as Levalbuterol. The manufacturer of levalbuterol, Sepracor, has implied (although not directly claimed) that the presence of only the R-enantiomer produces fewer side-effects.

  • Metabolism:

    Hydrolyzed by esterases in tissue and blood to the active compound colterol. The drug is also conjugatively metabolized to salbutamol 4'-O-sulfate.

  • Toxicity:

    LD50=1100 mg/kg (orally in mice)

  • IUPAC: 4-[2-(tert-butylamino)-1-hydroxyethyl]-2-(hydroxymethyl)phenol
  • ATC: R03CC02 R03AC02
  • PubChem: 2083
  • DrugBank: DB01001 (APRD00553)
  • Formula: C38H50N6O5
  • Molecular Mass: 239.3107
  • Synonyms: Albuterol Albuterol Sulfate Albuterol Sulphate Levalbuterol Salbutamol Sulfate Salbutamol Sulphate
  • SMILES: CC(C)(C)NCC(O)C1=CC(CO)=C(O)C=C1
  • AHFS Code: 12:12.08.12 48:12.04.12
  • InChl: NDAUXUAQIAJITI-UHFFFAOYSA-N
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