47141-42-4 Category:
  • #LGM Pharma is a Levobunolol CAS# 47141-42-4 API supplier distributor based in the USA. Inquire about DMF, cGMP, price, availability, delivery, purity, and more.
  • #Questions? Call our customer API support number 1-(800)-881-8210.
  • #LGM Pharma offers this active ingredient but not the finished dosage forms.

Product Details:

  • CAS No: 47141-42-4
  • AHFC code: 53:32.0
  • Synonyms: Levobunolol HCl Levobunololum [INN-Latin]
  • ATC Code: S01ED03
  • Chemical Formula: C11H12Cl2N2O
  • Molecular Weight: 291.3853
  • Assay/Purity: Typically NLT 98%
  • DrugBank: DB01210 (APRD00165)
  • PubChem: 39468
  • IUPAC: 5-[(2S)-3-(tert-butylamino)-2-hydroxypropoxy]-1,2,3,4-tetrahydronaphthalen-1-one

Additional Details

For lowering intraocular pressure (IOP) and may be used in patients with chronic open-angle glaucoma or ocular hypertension.
Levobunolol is an ophthalmic beta-blocker, equally effective at _(1)- and _(2)-receptor sites. Levobunolol reduces both elevated and normal IOP in patients with or without glaucoma. In patients with elevated IOP, levobunolol reduces mean IOP by approximately 25-40% from baseline. As the drug is a nonselective &beta-adrenergic blocking agent, it can produce both systemic pulmonary and cardiovascular effects following topical application to the eye. These effects include adverse pulmonary effects (eg. bronchoconstriction, increased airway resistance), and a decrease in blood pressure and heart rate.
Mode of Action:
Levobunolol's mechanism of action in reducing IOP is not clearly defined, but is believed to be due to a reduction of the production of aqueous humor via blockage of endogenous catecholamine-stimulated increases in cyclic adenosine monophosphate (AMP) concentrations within the ciliary processes.
Bradycardia, hypotension, bronchospasm, and acute cardiac failure, LD50=700 mg/kg (orally in rat).
General Reference:
Ishibashi T, Yokoi N, Kinoshita S: Comparison of the effects of topical levobunolol and timolol solution on the human ocular surface. Cornea. 2003 Nov;22(8):709-15. Pubmed Ogasawara H, Yoshida A, Fujio N, Konno S, Ishiko S: [Effect of topical levobunolol on retinal, optic nerve head, and choroidal circulation in normal volunteers] Nippon Ganka Gakkai Zasshi. 1999 Jul;103(7):544-50. Pubmed Leung M, Grunwald JE: Short-term effects of topical levobunolol on the human retinal circulation. Eye. 1997;11 ( Pt 3):371-6. Pubmed Dong Y, Ishikawa H, Wu Y, Yoshitomi T: Vasodilatory mechanism of levobunolol on vascular smooth muscle cells. Exp Eye Res. 2007 Jun;84(6):1039-46. Epub 2007 Jan 27. Pubmed Gonzalez JP, Clissold SP: Ocular levobunolol. A review of its pharmacodynamic and pharmacokinetic properties, and therapeutic efficacy. Drugs. 1987 Dec;34(6):648-61. Pubmed Lesar TS: Comparison of ophthalmic beta-blocking agents. Clin Pharm. 1987 Jun;6(6):451-63. Pubmed Novack GD: Levobunolol for the long-term treatment of glaucoma. Gen Pharmacol. 1986;17(4):373-7. Pubmed
Products currently covered by valid US Patents are offered for R&D use in accordance with 35 USC 271(e)+A13(1). Any patent infringement and resulting liability is solely at buyer risk.

API’s From Quality Manufacturers:

  • Cost effective materials based on specific requirements
  • Small quantities for initial research and larger development quantities towards product commercialization


  • Technical packages, letters of access to filed DMFs
  • Complete assistance in any regulatory filings
  • Top quality GMP certified manufacturers
  • Have necessary regulatory credentials


Related YouTube Videos