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Naphazoline

CAS No:
835-31-4 Category:
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Product Details:

  • Product Name: Naphazoline
  • CAS #: 835-31-4
  • Mode of Action:

    Naphazoline is a direct acting sympathomimetic drug, which acts on alpha-adrenergic receptors in the arterioles of the nasal mucosa. This activates the adrenal system to yield systemic vasoconstrction. In producing vasoconstriction, the result is a decrease in blood flow in the nasal passages and consequently decreased nasal congestion. The vasoconstriction means that there is less pressure in the capillaries and less water can filter out, thus less discharge is made.

  • Pharmacodynamics:

    Naphazoline is a direct acting sympathomimetic adrenergic alpha-agonist used to induce systemic vasoconstriction, thereby decreasing nasal congestion and inducing constriction around the conjunctiva. The sympathomimetic action of Naphazoline constricts the smaller arterioles of the nasal passages, producing a decongesting effect. Naphazoline ophthalmic causes constriction of blood vessels in the eyes. It also decreases itching and irritation of the eyes. aphazoline constricts the vascular system of the conjunctiva. It is presumed that this effect is due to direct stimulation action of the drug upon the alpha adrenergic receptors in the arterioles of the conjunctiva resulting in decreased conjunctival congestion. Naphazoline belongs to the imidazoline class of sympathomimetics.

  • Toxicity:

    Extended usage of Naphazoline can result in decreased effectiveness or a build up of tolerance against the drug. The number of receptors decreases, and when the administration of the drug is ceased, chronic congestion can occur; this is called rhinitis medicamentosa, commonly referred to as rebound congestion. Moreover long-term overdosing can cause degenerative changes in nasal mucous membranes that pose another health problem.

  • IUPAC: 2-(naphthalen-1-ylmethyl)-4, 5-dihydro-1H-imidazole
  • ATC: R01AA08 S01GA01 R01AB02
  • PubChem: 4436
  • DrugBank: DB06711
  • Formula: C19H27NO3
  • Molecular Mass: 210.2744
  • SMILES: C(C1=NCCN1)C1=CC=CC2=CC=CC=C12
  • InChl: CNIIGCLFLJGOGP-UHFFFAOYSA-N
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