Oxybutynin

Also known as: (±)-Oxybutynin, 4-(Diethylamino)-2-butyn-1-yl cyclohexyl(hydroxy)phenylacetate, 4-Diethylamino-2-butynyl phenyl cyclohexylglycolate, alpha-Cyclohexyl-alpha-hydroxy-benzeneacetic acid 4-(diethylamino)-2-butynyl ester, Benzeneacetic acid, α-cyclohexyl-α-hydroxy-, 4-(diethylamino)-2-butyn-1-yl ester, Cystrin, Ditropan, Lyrinel XL, Oxibutinina, Oxibutyninum, Oxybutinin, Oxybutynin Base, Oxybutynine, Oxybutyninum, Oxytrol, Pollakisu

Oxybutynin (CAS 5633-20-5) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C22H31NO3 and a molecular weight of 357.486 g/mol. Key properties include a melting point of 125 - 130ºC, a boiling point of 494.4±45.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 252.8±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5633-20-5
Jingsj CID: J-1958178-3
Molecular Formula: C₂₂H₃₁NO₃
Molecular Weight: 357.486 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	125 - 130ºC
Boiling Point	494.4±45.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	252.8±28.7 °C
Exact Mass	357.230408
PSA	49.77000
LogP	5.19
Vapor Pressure	0.0±1.3 mmHg at 25°C
Refractive Index	1.546
Storage Conditions	-20°C

Activity & Biological Data

Additional Information	[1]. Tupker, R.A., A.M. Harmsze, and V.H. Deneer, Oxybutynin therapy for generalized hyperhidrosis. Archives of dermatology, 2006. 142(8): p. 1065-1086. [2]. Mijnhout, G., et al., Oxybutynin: dry days for patients with hyperhidrosis. Neth J Med, 2006. 64(9): p. 326-8. [3]. Schollhammer, M. and L. Misery, Treatment of hyperhidrosis with oxybutynin. Archives of dermatology, 2007. 143(4): p. 543-551.

Additional Information

[1]. Tupker, R.A., A.M. Harmsze, and V.H. Deneer, Oxybutynin therapy for generalized hyperhidrosis. Archives of dermatology, 2006. 142(8): p. 1065-1086. [2]. Mijnhout, G., et al., Oxybutynin: dry days for patients with hyperhidrosis. Neth J Med, 2006. 64(9): p. 326-8. [3]. Schollhammer, M. and L. Misery, Treatment of hyperhidrosis with oxybutynin. Archives of dermatology, 2007. 143(4): p. 543-551.

Customs & Trade Information

HS Code	2922509090
Summary	2922509090. other amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Oxybutynin?

The CAS number of Oxybutynin is 5633-20-5.

What are the molecular formula and molecular weight of Oxybutynin?

Oxybutynin has molecular formula C22H31NO3 and molecular weight 357.486 g/mol.

What are the upstream and downstream products of Oxybutynin?

For Oxybutynin, Upstream Products: Oxybutynin hydrochloride, 4-(Diethylamino)but-2-yn-1-ol, 2-Cyclohexylmandelic acid; Downstream Products: 4-(Diethylamino)but-2-yn-1-ol, 2-Cyclohexylmandelic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Oxybutynin (CAS 5633-20-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1958178-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.