• # LGM Pharma is a Oxybutynin CAS# 5633-20-5 API supplier distributor based in the USA. Inquire about DMF, cGMP, price, availability, samples, sourcing, purity and more.
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  • # LGM Pharma offers this active ingredient but not the finished dosage forms.
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Product Details:

  • Product Name: Oxybutynin
  • CAS #: 5633-20-5
  • Mode of Action:

    Oxybutynin exerts a direct antispasmodic effect on smooth muscle and inhibits the muscarinic action of acetylcholine on smooth muscle. No blocking effects occur at skeletal neuromuscular junctions or autonomic ganglia (antinicotinic effects). By inhibiting particularily the M1 and M2 receptors of the bladder, detrusor activity is markedly decreased.

  • Pharmacodynamics:

    Oxybutynin is an antispasmodic, anticholinergic agent indicated for the treatment of overactive bladder with symptoms of urge urinary incontinence, urgency, and frequency. Oxybutynin relaxes bladder smooth muscle. Oxybutynin exhibits only one-fifth of the anticholinergic activity of atropine on the rabbit detrusor muscle, but four to ten times the antispasmodic activity. Antimuscarinic activity resides predominantly in the R-isomer.

  • Metabolism:

    Hepatic, primarily by CYP3A4

  • Toxicity:

    LD50=1220 mg/kg (Orally in rats, Goldenthal)

  • IUPAC: 4-(diethylamino)but-2-yn-1-yl 2-cyclohexyl-2-hydroxy-2-phenylacetate
  • ATC: G04BD04
  • PubChem: 4634
  • DrugBank: DB01062 (APRD00427)
  • Formula: C23H27FN4O3
  • Molecular Mass: 357.4864
  • Synonyms: Oxibutinina [INN-Spanish] Oxibutyninum Oxybutinin Oxybutynin Base Oxybutynin Chloride Oxybutynin Hydrochloride oxybutynin topical gel Oxybutynine [INN-French] Oxybutyninum [INN-Latin] transdermal patch
  • AHFS Code: 26:12.0
  • General Reference:


    1. Tupker RA, Harmsze AM, Deneer VH: Oxybutynin therapy for generalized hyperhidrosis. Arch Dermatol. 2006 Aug;142(8):1065-6. Pubmed
    2. Mijnhout GS, Kloosterman H, Simsek S, Strack van Schijndel RJ, Netelenbos JC: Oxybutynin: dry days for patients with hyperhidrosis. Neth J Med. 2006 Oct;64(9):326-8. Pubmed
    3. Schollhammer M, Misery L: Treatment of hyperhidrosis with oxybutynin. Arch Dermatol. 2007 Apr;143(4):544-5. Pubmed


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LGM Pharma Acquires CDMO

On July 27, 2020, LGM Pharma announced its acquisition of the formulation development and drug product contract manufacturing business of Nexgen Pharma, Inc. As a result, you will notice our new logo and visuals throughout the website. We’re working on updates to reflect the exciting, expanded CDMO capabilities and services we now can offer you.

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